膨胀水泥: expa ion cementexpanded cementexpanding cementexpansion cementexpansive cement
收缩: 1.(由大变小; 由长变短) contract; shrink 短语和例子使肌肉收缩 contract a muscle; 低温使金属收缩。 low temperature contracts metals. 这肥皂会使毛织品收缩吗? will this soap shrink woolen clothes?2.(紧缩) concentrate one's forces;
水泥: cement; -lith 短语和例子水泥是由石灰石造成的。 cement is made from limestone.; 水泥刨花板 cement-bonded wood chipboard; 水泥板(铺砌)路面 cement flag pavement;水泥泵[机械工程] cement pump; 水泥标号 strength of cement; cement gra
