external LU外部逻辑单元externaladj.外来的；外部的；外面的；表面的n.外观；外部；外界事物external shoulder angle阳角扇形砖external interrupt mask外部中断屏蔽external grating cavity外光栅腔external authentication外部认证external mold lubricant外施脱模剂external shielding body外屏蔽体external control system外部控制系统external microprocessor外部微处理器external failsafe timer外部保险计时器external calliper gauge外卡规