“zigzag rule”的概念、定义、翻译、参考文献-科学参考

单词	zigzag rule
释义	zigzag rule [`zig´zag ´rül] ^ENGINEERING A folding ruler having pivoted sections that lock when the ruler is opened.
随便看	drag coefficient drag conveyor drag-cup generator drag-cup motor drag-cup tachometer drag cut drag direction drag factor drag fold drag force dragging of inertial frames drag-in dragline dragline conveyor dragline excavator dragline scraper drag link drag mark Dragon dragonfly drag-out drag parachute drag rope dragsaw drag-stone mill

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