Silver brazing Method: Apply brazing wire or rod at point where tube enters valve socket.

银钎焊法：将焊线或焊杆点在阀门里的管道套座上。

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The principle, method, experiment facilities and result of the realization of the International Temperature Scale of 1990(ITS\|90) above silver freezing point at NIM are described.

叙述中国计量科学研究院复现我国银凝固点以上国际温标（ITS 90 ）的原理、方法、仪器设备、实验结果、温标不确定度评定以及参加国际关键比对的初步结果。

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