The test methods of effective opening size are studied after analyzing the hydraulic parameters of synthetic staple fibers needling nonwoven geotextiles.

通过对短纤针刺非织造土工布水力特性试验结果的分析，着重探讨有效孔径试验方法的问题。

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"It has proven to be a very cost effective way of opening up local democracy to thousands of people who would not have previously attended meetings in person, " the council said.

BBC: Bristol City Council webcast watched by three people

And Bracken has proved an effective foil to the opening pair of Glenn McGrath and Brett Lee.

BBC: SPORT | Cricket | International Teams | Australia | Remodelled Aussies excite Ponting

An effective closing argument makes certain on promises made during the opening statements.

FORBES: Case Closed For Lay, Skilling