trace contaminant 中文意思是什麼

trace contaminant 解釋
痕量染污物
  • trace : n 1 跡,足跡,蹤跡,去向。2 痕跡;證跡,線索,結果;【心理學】記憶痕;【植物;植物學】(脈)跡。3...
  • contaminant : n. 沾染物(質),(使清潔空氣等污染的)污染物。
  1. Industries with particularly high potential exposures include : construction work involving welding, cutting, brazing or polishing on lead surfaces and application of lead solder ; most smelter operations either as a trace contaminant or as a major product ; secondary lead smelters where lead is recovered from batteries ; and firing ranges

    有機會接觸鉛的工作包括:在建築業中,在含鉛的表面上進行焊接切割鍍焊或打磨粉飾以及使用鉛錫作焊接在采礦業中,提煉鉛或其他元素的工種在回收業中,把電池中的鉛再循環利用以及彈藥製造工作。
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