The geometry of a worm is similar to that of a power screw.

蜗杆的几何形状类似于机械螺纹，蜗杆的转动与一个渐开线导轨直线移动是相仿的。

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Deals with screws and fasteners including power screw and preload fasteners.

讨论螺钉、螺杆等紧固件的设计，包括传动螺杆和预加载紧固件。

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But because it now oil and chemical use screw compressor for flow and pressure from the shaft power, high demands, at present basically also rely on imports.

但由于目前石油和化工用螺杆式压缩机对流量、排出压力、轴功率等要求较高，目前基本上还依赖进口。

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They love to wield power from socialist bastions and love to screw the private sector and the 50 milllion aMERICANS who would surely like to try this drug from Orex.

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Let's limit the power of state governments so they can only screw up things inside their own borders.

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In refusing to close off the option entirely, however, they have pointed, rightly, to the dangers of the neighbourhood: China, already a nuclear power, and Pakistan, which like India is only a screw's turn, at most, from having nuclear weapons of its own (see article), live next door.

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