bottom platform
短语词组
- bottom supporting platform 底層支持平台
- bottom founded platform 底底式平台
- bottom -dump platform 活底板吊框
- bottom sitting drilling platform 坐底式鑽井船
- sloping -bottom platform 斜坡平台
- bottom supporting drilling platform 定柱沉墊式鑽井平台;坐底式鑽井平台
- platform bottom 收割台底板 返回 bottom platform