螺矩
- 网络pitch

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通过调节胆甾相液晶的螺矩、聚合物的浓度和聚合反应条件,我们能使PSCT光阀性能最优化。
We optimized the performance of the PSCT valve by adjusting the cholesteric pitch , the polymer concentration and polymerization condition .
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车钩(螺旋钩或链钩)铁道或有轨电车道机车或车辆用机械式可调螺矩螺旋桨
Coupling gear ( hook , screw-or chain-type ), for railway or tramway locomotives or rolling-stock