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考察组在PTB还参观了力学部中有关于长度和角度计量的部份实验室和实验装置,我们见到的主要项目有: 1.高纯度86Kr同位素的制备 PTB力学部长度组研究从含量84％的原
The PTB also visited some laboratories and experimental devices in the Department of Mechanics for measurement of length and angle. The main items we have seen are as follows: 1. Preparation of high-purity 86Kr isotopes The PTB mechanics department length group was studied from 84 % Of the original