常見(jiàn)例句雙語(yǔ)例句The invention is useful for producing lightened gypsum plaster boards.本發(fā)明可用於制造減輕的石膏板。It includes boards designed to receive either direct surface decoration or gypsum plaster.這還包括直接的表麪裝飾板或是石膏板。Setting time of gypsum plaster is very short, usually only 6~30 min, and operation time is only 5-10 min, which cannot satisfy the practical plastering and construction of gypsum-based material.半水石膏凝結(jié)硬化很快，其初終凝時(shí)間爲(wèi)6～30分鍾，可操作時(shí)間衹有5～10分鍾，往往不能滿足石膏基材料的成型與施工的需要。 返回 gypsum plaster