A.涂料中任意加水 B.基礎(chǔ)干燥 C.基層粗糙 D.涂料稠度不夠
A.施涂時(shí)蘸涂料少 B.施涂時(shí)用力過大 C.涂料施涂太厚 D.涂料施涂太薄
A.45% B.55% C.65% D.80%