您要查找的是不是：
- track propulsion device 履带行驶装置
- The track pin is an important component for transferring load in the propulsion device of a self-propelled gun. 履带销是自行火炮推进装置中重要的传力元件。
- Process of propulsion device fabrication 动力装置制造工艺学
- Pulse Detonation Engine (PDE) is a high-powered propulsive device which has attracted great attention from the Department of Defense in China as a new concept at the present time. 脉冲爆震发动机（PDE）是一种新概念、高性能的推进装置，目前已受到我国国防部门的高度重视。
- Our pilotless rocket enters the track of the earth. 我们把一个无人驾驶的火箭送入了地球的轨道里。
- This aircraft works by jet propulsion. 这架飞机是喷气推进的。
- This rough track will soon be a metalled road. 这条坑坑洼洼的路不久就要铺上碎石了。
- I'm trying to track down my old Aunt Maud. 我正试图寻找到我那年迈的婶婶莫德。
- The cyclist went at full sail along the track. 自行车手沿着跑道全速前进。
- Bill has a feeling he is on a fast track. 比尔感觉到他正快速迈向成功。
- A display device that uses a cathode ray tube. 一种使用阴极射线管的显示装置。
- The new race track is nearly six miles in extent. 这条新跑道将近六英里长。
- If took ten men to wrestle the device into place. 用了10个人才把那台装置挪动到位。
- John bears the bell in all track events at school. 约翰在学校里的各个径赛项目中都赢得第一名。
- Study on the Dynamics Character of the Pull Valve of Water Surface Propulsion Device 水面推进装置提升阀动态特性研究
- I'm on the track of a valuable painting. 我在追寻一幅珍贵的油画。
- Keep track of the time you actually travel. 把你旅行的实际时间记录下来。
- Signals control each section of the railway track. 各种信号控制着铁路轨道的每个部分。
- EXPERIMENTS OF PENDULUM ASSEMBLY WITH HYDRAULIC PROPULSION DEVICE TO IMPROVE PENETRATION RATE FOR FORMATIONS WITH BIG DIP ANGLE 钟摆钻具带液力推力器组合提高大倾角地层钻井速度试验
- A locomotive pounded down the railway track. 一辆机车沿着铁道隆隆地驶去。
