... dust nozzle 喷粉嘴 dust pan 畚箕 dust pot 灰斗 ...
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U.S. Army volunteers took pot, acid and angel dust at a facility in Edgewood, Md.
在美国马里兰州艾奇伍德的一套特殊装置中，美国陆军志愿者接受掩埋、酸和沙尘等类测试。
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Patent on tool pot to reduce dust for 80% amount which is attached on tool tappet and also improve processing accuracy.
专利置刀刀套，大量减少80%异物附著刀具锥柄上，提高加工精度。
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