题目内容
(请给出正确答案)
[主观题]
Syneresis refers to()A.the expansion ofa hydrocolloid impression material when it takes
Syneresis refers to()
A.the expansion ofa hydrocolloid impression material when it takes in water
B.the contraction of a hydrocolloid impression material when it exudes water
C.the fact that the sol and gel temperatures ofthe hydrocolloid differ
D.the inclusion ofpowder in a hydrocolloid impression material
如搜索结果不匹配,请 联系老师 获取答案