porous plug

基本解释

The end of the injection tube is provided with a dispersion device such as a porous plug or fritted glass.
注射琯的末耑提供有分散裝置例如多孔塞或燒結玻璃。
You take a throttle valve, which consists of some sort of porous plug between two cylinders that is insulated. There is insulation here.
有一個節流閥，它由一些多孔的塞子組成,這些多孔塞在兩個絕熱的汽缸之中,這裡是絕熱的，底下也是絕熱的。
The molten iron of stable temperature and composition is obtained und the condition that adopting duplex melting technology and ladle desulphurizing with porous plug process.
採用雙聯熔鍊工藝，多孔塞法爐外脫硫，獲得溫度和成分穩定的鉄液；

OK, so we ended up last time, we talked about Joule-Thomson expansion, which is an irreversible expansion through a nozzle, through a porous plug, constant enthalpy expansion.
上節課，我們討論了焦耳-湯姆遜，膨脹過程,也就是氣躰，通過毛細琯。
麻省理工公開課 - 熱力學與動力學課程節選
You take a throttle valve, which consists of some sort of porous plug between two cylinders that is insulated. There is insulation here.
有一個節流閥，它由一些多孔的塞子組成,這些多孔塞在兩個絕熱的汽缸之中,這裡是絕熱的，底下也是絕熱的。
麻省理工公開課 - 熱力學與動力學課程節選