They rest on their whole active surface and practically can not stand any pressure difference action.
他们依靠在他们的整个作用面上,并且实际不能承受任何压差作用。
They are concerned about the team's active surface as well as the team 's expectations about the future.
他们关注团队的积极面以及团队对未来的期望。
The performance and mechanism of active surface filter aid are researched with V-Ti magnetite as test object.
以钒钛磁铁矿为试验对象,研究表面活性型助德剂的助滤性能及机理。
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