词汇	toandfro movement
释义	toandfro movement n.往复运动
随便看	ultra-fine aluminum silicate ultrafine amorphous alloy powder ultra-fine amorphous boron powder ultrafine amorphous powder ultrafine and nano-structured materials ultra-fine ATC ceramics Ultra fine attrition ultrafine bamboo charcoal ultrafine barite powder ultrafine black tea ultrafine calcium carbonate Ultra fine calcium carbonate ultra-fine calcium carbonate ultra-fine carbide ultra-fine carbides Ultra Fine Carbon Ultrafine carbon black ultra-finecement ultrafine cemented carbide ultrafine cemented carbide bar ultrafine cemented carbides ultrafine cement slurry ultrafine ceramic powder ultra-fine ceramics ultrafine ceria