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加工过程中，如出现异常现象，可按下“急停”按钮，以确保人身和设备的安全。
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数控车间的企业5S标准是指整理、整顿、清扫、清洁和素养。
•(1) If the country’s imports were more than exports, the country would have a trade surplus.
•(2)The mode of transportation includes only that by air and land.
•(3)Before the shipment, seller prepares the necessary shipping documents such as the invoice and packing list.
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