单词	variable density track
释义	variable density track 变密度式声迹
随便看	manned reconnaissance satellite manned reentry Manned Remote Work Station Manned Repeater Station manned research submersible Manned Res.Submersible SHINKAI 2000 manned return vehicle reentry Manned Reusable Spacecraft Manned Revolving Simulated Space Station Manned Revolving Space System Simulator manned rocket Manned Rotating Platform manned satellite manned-satellite Manned Satellite Inspection System Manned Satellite Inspector Manned Scientific Orbital Laboratory manned space manned spacecraft manned space craft manned spacecraft backup landing site manned spacecraft center manned spacecraft engineering manned spacecraft instrument manned spacecraft launch