- 相关词组
- riser staircase signal上升阶梯信号
- rocket parachute flare signal火箭降落伞火焰信号
- ringing signal oscillator振铃信号振荡器
- route signal进路信号机
- roller operated valve滚子操纵的阀
- rotary signal旋转信标
- route signal for receiving-departure接发车进路信号
- route signal for departure发车进路信号机
- route lever signal box进路手柄式信号楼
- road crossing signal道口信号(机)
- ringing tone signal振铃音信号
- right left signal左右方向指导信号
- route signal for receiving接车进路信号机
- rhythmic time signal间隔式时间信号
- roller operated lubricating apparatus滚柱润滑装置
- right-hand signal右信道信号
- right of way signal通行信号
- ringing signal振铃信号
- route relay signal box进路继电信号楼
- rope operated lift绳索式起落机构
- 今日热词
- 热门搜索
- wait for you 等你
- never think 不曾想
- headmistress n.女校长;
- desktop n.桌面;
- appropriate adj. 适当的;恰当的;合适的;v. 盗用;侵吞;拨（专款等） ;
- imaginary adj.想象中的;虚构的;
- glance v.瞥;浏览;n.一瞥;
- bootstrap n. 解靴带;引导程序;靴袢;自益;
- loss n.损失;丧失;去世;亏损;失败;失落;
- are you ready 你准备好了吗;准备好了吗;准备好没
- staff n.全体职工;行政人群;拐杖;v.任职于…;
- path n.路径; 道路; 路线; 小路; 小径; 行动计划; 成功的途径;
