末端开口的,自由回答的open-ended
跳开式熔断器drop-out fuse【电】;flip-open cut-out fuse【电】
往来账户制open-account basis【会计】
【化】 开杯试验open cup test
开口式剪切机open-gap shears
自由锻flat die forging【机】;open die forging【机】;
开放阅读框架open read fragment，ORF
开窍解毒open the orifices and resolve toxin