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Therefore, the design of precise sand sampler is of great significance.
因此，研究设计采样精确的集沙仪具有重要意义。
youdao
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The sand bailer is also used as a bottom hole sampler.
捞砂筒也可用作业井底取样器。
youdao
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The sand bailer is also used as a bottom hole sampler.
捞砂筒也可用作业井底取样器。
youdao