A class, and I can't wait to start playing with, and then put the tube in the hot water heating, the exciting moment is coming, but for a long time not see a little action.
一上课，我就迫不及待的开始摆弄，然后把试管放进热水中加热，激动人心的时刻就要到来了，可是等了半天不见一点动静。
The best time to melt the end of the tube increases with the increase of heating area, and more importantly, the energy of con vection and radiation decreases with the increase of the wall thickness.
管端面熔化的最佳时间，是随着需要加热的面积增大而增大的，更重要的是对流和辐射传播的能量，会随着管壁厚度的增加而减小。
The device has these features that temperature acquisition, accurate heating time, timely cooling etc; it provides the high level automation device to steel U-tube solution treatment.
装置具有温度采集、加热时间准确、及时冷却等优点，为不锈钢u形管固溶处理提供了自动化水平比较高的设备。
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