A.手工涂刷 B.空氣噴涂 C.靜電噴涂 D.高壓噴涂 E.低壓噴涂
A.人工除銹 B.噴砂除銹 C.機(jī)械除銹 D.化學(xué)除銹 E.彈珠除銹
A.80% B.85% C.90% D.95%