过饱和溶液形成的方法有哪些?
参考答案:
(1)热饱和溶液冷却(等溶剂结晶)
(2)部分溶剂蒸发法(等温结晶法)
(3)真空蒸发冷却法
(4)化学反应结晶
In the future, ________ Google Inc. rules the entire universe, you won't necessarily have to type
anything to do a search.[ ]
A. when
B. where
C. which
D. /
改善T8钢的切削加工性能,可采用()。
A、扩散退火
B、去应力退火
C、再结晶退火
D、球化退火