Chapter 77 Data doesn’t lie Wang Wei stopped what he was doing, stood up and walked to Xu Qingzhou. "Starting from sample No. 15, a small amount of hafnium (Hf) and zirconium (Zr) were added." Xu Qingzhou said as he plugged the hard drive into the computer. Wang Wei nodded and said, "We have experimented and found that adding these two elements is beneficial to the high alloy's resistance to molten alkali metal corrosion. The fact is just as we expected. In subsequent tests, all data of the samples have been improved." "Last night, I used the model to simulate the data and found that starting from sample No. 83, the subsequent experimental data was no longer scientific. The magnetic field fluctuated greatly. By the time of sample No. 100, the value of n had reached 0." As he spoke, Xu Qingzhou simulated the data until a strange value appeared in the end. "I think it is because the addition ratio of hafnium and zirconium has changed that this situation has occurred." "This will not happen. The magnetic induction intensities of hafnium and zirconium are very small, about 10^-6 gauss. Especially zirconium, it even has a tiny hysteresis loop!" Wang Wei said with certainty. "By the time it comes to sample No. 34, the content of gas interstitial elements is already relatively high." Xu Qingzhou pointed to the organizational structure chart on the screen. “Yes, but after our testing, even in the case of sample No. 53 tested so far, the sample composition uniformity is between , which is stable and completely within the acceptable range.” "But according to the simulation data of the model, even sample No. 98 may have an output value of 0." “Could there be something wrong with your model?” Wang Wei still couldn’t believe that after running the experiment for so long, almost half of it was wrong.
"Impossible! Yes, this model is not perfect, and the simulated values will have errors, but the main framework is accurate, which means that there will be no problems in the general direction. The simulation results show that the data after sample No. 100 are abnormal. Data does not lie." Xu Qingzhou was very confident in the model. He checked it several times yesterday. Gong Yunfei was also attracted by the two of them. "According to my junior's model, we have taken the wrong path. Starting from sample 65, all subsequent experiments have been in vain." Wang Wei stared at the model with an ugly expression, not because of Xu Qingzhou's rebuttal, but because if it was really wrong, it meant that they had wasted a lot of time. This is how scientific research works. 1 is 1, 2 is 2, and the more you argue, the clearer it becomes. Wang Wei said: "From the perspective of materials science, hafnium (Hf) and zirconium (Zr) both have non-magnetic properties. The latest VAR melting process technology for niobium-titanium alloy published by PMS also adds these two elements." Gong Yunfei added: "But it doesn't clearly state how many elements were added." Xu Qingzhou did not interrupt. He knew very little about the materials and just listened quietly to the two people's discussion. Ten minutes later, Wang Wei let out a long breath, turned to look at Xu Qingzhou, and said, "Junior brother, I need a few days to verify it." "Leave the model optimization work to me," Xu Qingzhou nodded. Wang Wei left with the model and data. "Junior brother, have you not had enough rest these days?" Seeing Xu Qingzhou had two dark circles under his eyes, Gong Yunfei asked with a smile. Xu Qingzhou nodded. He went to bed at around 3 o'clock last night and got up very early today. "I'll go back and catch up on some sleep first." After saying goodbye to Gong Yunfei and the others, Xu Qingzhou went straight back to the dormitory. There was no one in the dormitory and he didn't know what they were busy with. He set an alarm for 13:40 . and went straight to bed. In the afternoon, after finishing his English class in Building 3, Xu Qingzhou continued to spend time in the library. In addition to perfecting the mathematical model, Xu Qingzhou also borrowed two mathematics books, one is "Modern Mathematical Physics Methods" and the other is "Advanced Mathematical Theory". The current courses are not difficult for Xu Qingzhou, such as the advanced substitution class in the morning. He plans to read some extracurricular books during class. At 11 o'clock in the evening, Xu Qingzhou packed up and came out of the library of the School of Mathematics. He replied to Song Yao. At 10:50, she sent a message asking him if he was done.
As soon as he replied to the message, his phone vibrated. It was a call from Song Yao. "Why are you still in the library so late?" A clear and cool voice came from the receiver. Xu Qingzhou felt like he was being checked on, so he nodded and replied, "Yes, I just came out of the library and was about to go back to the dormitory." Song Yao said in a dissatisfied tone, "Xu Qingzhou, if I don't look for you, will you not look for me?" "I've been very busy recently." Xu Qingzhou could feel the resentment even through the phone. On the balcony, Song Yao snorted coldly, and suddenly understood her mother's helplessness. Her father always said he was busy, and she pouted: "Is he so busy that he doesn't even have time to eat together?" After saying this, Song Yao was stunned again. This sentence seemed so familiar. Why did she become like a shrew? "Dinner together tomorrow night?" The voice on the phone brought Song Yao back. The girl leaned on the balcony, the breeze blew past, lifting a few strands of hair on her forehead, and she lazily uttered two words: "No." Oh, why should he say it? At this time, Xu Qingzhou passed by the small lake, and another group of people hugged each other and bit each other on the chairs. Bah, so cheap. He looked down upon the man on the chair and paused, "Do you have plans for tomorrow?" "No." Song Yao's voice was still lazy. "Well, I'll give you a chance. If you beg me, I'll go." "Please." "Xu Qingzhou, do you have any bottom line?" "It's okay to not have it at this time." After Xu Qingzhou's last class on Friday afternoon, he went to find Song Yao. There was a drizzle in the evening. Although the rain had stopped, the air was filled with the scent of moist earth and the wind was still a little chilly. Song Yao wore her newly bought white sweatshirt, and she stood out gracefully, attracting the attention of passers-by, even girls. Facts proved that girls really like to look at beautiful women. However, there was always a hint of quietness and tranquility in Song Yao's crystal clear eyes, and she gave off a feeling of keeping people at a distance. I haven't seen her for a week, but she's still as beautiful as ever. After taking a look, Xu Qingzhou smiled and said, "The temperature has dropped quite a bit. It's a bit cold at night now." Seeing that Xu Qingzhou didn't wear the clothes he bought last time, Song Yao was a little unhappy, "It's so cold, you only wear this little, who else will it freeze?" "What to eat?" Xu Qingzhou wondered why this person was so resentful. Did her relatives come? But didn't her relatives come at the beginning of the month? Song Yao thought about the business, and didn't bother about the clothes anymore. She said, "Sichuan cuisine. I've been here for more than half a month. I kind of miss the food in Chengdu." "Here, Sichuan cuisine is not that authentic?" Xu Qingzhou recalled. Song Yao frowned slightly: "Have you been there to eat? With whom?"
"Is this the point?" Xu Qingzhou was a little speechless: "Isn't this normal? When in Rome, do as the Romans do. Sichuan cuisine will also have many changes when it comes here. Forget it this time. If you want to eat something authentic, I'll take you there when I have time." When Song Yao heard that Xu Qingzhou was going to take her there, she felt a lot warmer in her heart and for a moment she ignored the topic of who to go eat with. (End of this chapter)