track valve的用法和样例：
例句
- 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。 - His mind sagged round and round on the same track.
他的念头一而再再而三地在一条轨道上转着。
track valve的相关资料：
临近单词
trackway
track
Track While Scan Radar Simulator
Tracking Telemetry Data Receiver
track-subgrade-cutting slope
Tracking Data Handling Subsystem
Track and Field class curriculum
track and field teaching content
tracking and temperature testing
Track-While-Scan Quiet Radar
tracking control detent position
Track and field technique lesson
