单词	icing precaution
释义	icing precaution 防水措施
随便看	operation system operation system abstraction layer operation system and mode operation system auditing Operation System Control operation system database operation system function operation system function block operation system hardware operation system Kernel operation system management operation system map operation system of embedding operation system of server operation system porting operation system software operation table operation tactics operation tank operation target operation task operation tax of vehicle and ship Operation Teaching System operation team Operation Technical and Managerial System