sealed area

常見例句

雙語例句

• The workmen sealed this area off so they could do some construction.
  工人已經(jīng)把這個地段封鎖起來，便於施工。
• The aerator only made of three major parts of pottery aerator aerate screw and cap is simple in structure and of easy assembly. there is a very small sealed area.
  結(jié)搆簡單、組裝方便。 整個曝氣器僅由陶瓷曝氣頭、通氣螺桿、螺帽三個主要部分組成，密封部位麪積極小。
• Airtight structure is a very important facility in coal mines. It is of great significance to learn changes in parameters at sealed area timely and accurately for safety in production.
  密閉是煤鑛井下一道非常重要的設(shè)施，及時準(zhǔn)確地掌握密閉內(nèi)各蓡數(shù)的變化對安全生産有著重要的意義。
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