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assay；chemical examination；laboratory test为确定某种物质如矿物、合金、药品、抗生素或食物中的一种或几种组分是否存在,或者更多的是为确定这些组分的含量而作的化学试验检查各种标本,以提供诊断数据
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high vacuum breakdown
high-vacuum cathode-ray tube
high vacuum chamber
high vacuum coating machine
high vacuum coating unit
high vacuum compacting method
high vacuum compact method
high vacuum composite technique
high vacuum connector
high-vacuum connector
high vacuum contact device
high vacuum cut off
high-vacuum cut-off
high vacuum degassing
high vacuum densification method
high vacuum die casting
high vacuum diffusion pump
high-vacuum diffusion pump
high-vacuum discharge
highvacuum distillation
high vacuum distillation
high vacuum electron beam welding plant
high vacuum evaporation
high-vacuum evaporation technique
high vacuum evaporator
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更新时间：2026/6/27 3:54:03