lower the boom on惩罚;翻译
lower the boom翻译;采取严厉措施英语
Lower boom lifting angle下臂最大升角
lower boom topping lift下桅驶帆杆顶索
lower boom afterguy下桅驶帆杆船尾张索
Max lower boom lifting angle下臂最大升角
boom lower动臂下降
boom lower cycle time动臂下降循环时间