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闪点(PMC)中的PMC是什么意思,是哪三个单词的缩写,属于化学领域

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闪点(PMC)中的PMC是什么意思,是哪三个单词的缩写,属于化学领域
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Pensky Martin Closed Cup
flash point
"In the laboratory,the test is conducted in either an open or a closed container and the results are known respectively as open flash point (COC,or Cleveland Open Cup) or closed flash point (PMC,or Pensky Martin Closed Cup)."