[机]?挡销
... backing pass ==> 底焊焊道 backing pin ==> 挡销,支销 backing plate ==> 垫模板,后板 ...
The first recipients of the pin - Helen Sharman and Richard Garriott - had private funds backing their missions.
BBC: Honour given to 'UK astronauts'
英汉双解词典包含3185865条英汉词条,基本涵盖了全部常用单词的翻译及用法,是英语学习的有利工具。