Owing to the pump structure and side clearance between screw, it can transport non-lubricative medium.

由于这种泵的结构和螺杆间存在的侧间隙，它可以输送非润滑性介质。

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The bottom side of the line plate shall be cleaned up (no oil stains), and all the screw holes on the plate shall be tapped with screw taps.

线条板底侧面清洁干净(不能有油污)，板上螺丝孔全部用丝攻攻牙一次。

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Side view of wing screw with adjustable thread length.

螺纹长度可调整的翼形螺钉的侧面图。

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So when I screwed up, the consequences weren't as high as when kids on the South Side screw up. (Applause.) So I had more of a safety net.

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This time, Boro looked unable to respond and Martin O'Neill's revitalised Villa side turned the screw when Petrov connected with Gareth Barry's pass to fire past Schwarzer.

BBC: SPORT | Football | Premiership | Middlesbrough 1-3 Aston Villa

After Warwick levelled for Munster, the home side began to turn the screw with backs Peter Stringer, Murphy and Keith Earls looking especially lively.

BBC: Munster 25-10 Connacht