derrick head cargo block

进出口行业词汇英语翻译(D) ... derrick guy 吊杆稳索 derrick head cargo block 吊杆头起货滑车 derrick kingpost 起重桅杆 ...

造船工程英语词汇... ... 吊杆张索 derrick guy 杆顶吊货滑车 derrick head cargo block 杆顶问牵索滑车 derrick head span block ...

航海及... ... derrick head cargo block 吊杆头起重滑车 derrick head cargo block 上吊货滑车 derrick head fitting 吊杆头装置 ...