chemical limiting valve
... chemical impurity 化学杂质 chemical limiting valve 化学极限值 chemical procedures in the rotary kiln 回转窑内的化学变化过程 ...
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工人每天接触不至于产生不良反应化学介质的空气浓度的极限值。
Limit Value Air concentration of chemical substances to which workers may be exposed to daily without adverse effect.
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