The structure of the BES main drift chamber and arrangement of cosmic ray tests have been described briefly. The main test results of the chamber performance have been given.
简要描述了北京谱仪(BES)主漂移室的结构和宇宙线实验安排，给出利用宇宙线测试主漂移室性能的主要结果。
There are three main sources of drift in the sawtooth-core circuit, mostly temperature related.
在锯齿核电路中主要有三个漂移来源，多数都跟温度有关。
HITS is one of the classical link analysis algorithms, the main problem of it is the topic drift.
HITS是一种经典的链接分析算法，其主要问题是容易发生主题漂移。
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