sealed area

常见例句

双语例句

• The workmen sealed this area off so they could do some construction.
  工人已经把这个地段封锁起来，便于施工。
• 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.
  结构简单、组装方便。 整个曝气器仅由陶瓷曝气头、通气螺杆、螺帽三个主要部分组成，密封部位面积极小。
• 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.
  密闭是煤矿井下一道非常重要的设施，及时准确地掌握密闭内各参数的变化对安全生产有着重要的意义。
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