单词	双动--复动
释义	双动；复动double acting
随便看	dielectric gas dielectric gluing dielectric gluing press dielectric gradient dielectric gratings dielectric guide dielectric (heat) defrosting dielectric heat defrosting dielectric heater dielectric heating dielectric heating generator dielectric heating installation dielectric heating oven dielectric heat seasoning dielectric high frequency drying dielectric hysteresis dielectric hysteresis loss dielectric insulator dielectric isolation dielectricity dielectric layer dielectric leakage dielectric lens dielectric-lens antenna dielectric level