Other causes include the out - of - tolerance of blade chord width between adjacent blades, the undersize contact area of serrated working side and the local wearing of non - working side.

而相邻原机件叶片弦宽尺寸超差，锯齿形工作接触面积小，以及非工作面局部碰磨，是引发故障的次要因素。

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On the diplomatic side, Mongolia has been working with us on a raft of important issues -- non-proliferation, peacekeeping, on human rights.

WHITEHOUSE: Via Telephone

The Environment Agency will also be working on homes and businesses on Greta Side to fit properties with resistance measures such as waterproofing and non-return valves.

BBC: Keswick flood defence work to start