?淬火,灭弧,急冷    quenching

?淬火裂痕    quenching crack

?淬火液    quenching liquid

?淬火应力    quenching stress

?淬火温度    quenching temperature

?快速关闭门    quick acting door

?快速开闭舱盖    quick acting hatch cover

?速断开关    quick break switch

?应急快闭阀    quick closing emergency valve

?速接头    quick coupling

?紧急下潜    quick diving

?快速冷冻    quick freezing

?高速断续开关    quick make and break type switch

?高速冲床    quick working punch

?管形轴    quill shaft

?缀合铆钉    quilting (or tack) rivet

?五行铆接    quintuple riveting