单词	分级圆筛
释义	分级圆筛 grading reel
随便看	contact-tracings contact track contact-track contact transfer time contact transformation contact transistor contact transition resistance contact transmission contact travel contact treating contact treating process contact treatment with fullers earth contact tree Contact triangle measurement contact tripping contact tube contact twin contact type contact-type contact type cellular steam seal contact type conductivity meter contact type generator contact-type generator contact-type heater contact type image sensor