套筒式气封和油封总成，油封之间通密封空气， 油封与气封之间有一通大气的腔室。
Cartridge type air and oil seals-seal air is injected into the oil seal and is vented to atmosphere between the seals.
天文学家们通过观察设置在其宿主性之前的世界通就能够领略这颗行星上的大气，就像从地球上观察一样。
Astronomers were able to "sample" the planet's atmosphere by watching the world pass in front of its host star, as seen from Earth.
供料桶内的物料被大气压力压入出进料软管，通过进出料的三通管进入料缸。
Then the material in the feeding tank enters the feed hose and the charging cylinder via the tee piece under atmospheric pressure.
应用推荐