formal control

• 形式控制

formal control的用法和样例：

例句

1. Since the addition of the initiator causes a chain reaction to occur, control in the form of cooling must be exerted to control the size of the emulsion droplet.
   加入引发剂引起一个链式反应后，可以通过控制冷却形式控制乳液滴的大小。