封闭使用者组群 closed-user group
要保护封闭使用 be secured closed using 1-inch
封闭电炉使用说明书 closed electric furnace use instructions ; Closed electric user's manual ; Closed furnace manual
使用封闭式标签 balanced tags
月使用封闭式负压引流 Vacuum Sealing drainage ; VSD
当杀虫剂在农场附近池塘的温暖封闭水域使用时，环境很可能对鱼是致命的。
In the warm enclosed waters of farm ponds, conditions are very likely to be lethal for fish when insecticides are applied in the vicinity.
但是，如果曲线不是封闭的，不能直接使用格林公式。
But, you can't use Green's theorem directly if the curve is not closed.
是使用峡谷呢还是全封闭保存？
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