[作业 运输] 平面上的弹簧装配 planing boat: 滑行艇spring mounting: 弹簧安装; 弹簧垫架multi-step planing boat: 多断级滑行艇stepped planing boat: 断级式滑行艇three-point planing boat: 三点式滑行艇下载手机词典可随时随地查词查翻译