单词	marking plate
释义	marking plate 标记板,画线平台
随便看	mechanical action mechanical activating mechanical activation mechanical-activation mechanical activation-solid state reaction mechanical activator mechanical actuation mechanical actuator mechanical adder mechanical adhesion mechanical adjustable speed drive mechanical adjusting mechanical adjustment mechanical admittance mechanical admixture mechanical adsorption creep mechanical advantage mechanical advantage of lever mechanical advantage ratio mechanical advantages mechanical advantage shifter mechanical aeration mechanical aeration basin mechanical aeration system mechanical aerator