Hose corrugation designs include Standard Pitch, Open Pitch and Superflex.

波纹软管的设计包括标准波距，开阔波距和超柔韧。

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"It's hard to explain" should not be a standard part of your sales pitch.

“这很难解释的”不应成为你推销宣传的一个标准部分。

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Because the measurement standard of grating system is grating pitch, compared to usual interferometer, diffractive grating, system reduces environment influence on measurement accuracy.

由于光栅干涉测量系统以光栅栅距作为测量基准，相对于传统干涉仪，光栅尺系统受环境因素造成的测量误差影响较小。

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However, Arsenal boss Arsene Wenger has warned that if the problem is not sorted soon, a sub-standard pitch could damage England's 2018 World Cup bid.

BBC: Groundsmen's group invited to Wembley pitch meeting

Former Millennium Stadium executive and ex-Wales rugby international Rupert Moon told the BBC it was primarily a rugby stadium and would never be a Premiership-standard pitch.

BBC: Stadium owners admit shortcomings

RIAA's pitch for a new audio standard as a chance to get their own proprietary compression technique adopted so they can ask royalties for its use.

ECONOMIST: Roll-your-own CDs roll on