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1、
In this paper the performance of two kinds of samplers sintered metal filter is evaluated.
本文介绍温、湿度变化对两种改进型被动式活性炭累积氡采样器吸附性能的影响.
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2、
Bed material samplers, as first developed , may be divided into three types.
最初的河床质取样器有三种类型.
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