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- The working mechanism and characteristics of the helical seal are described and a successful application of the above helical seal are accomplished through reforming the furaldehyde pump. 对螺旋密封的工作机理及性能特点做了较为详细的论述，并通过对糠醛原料泵的改造试验，将螺旋密封成功地进行了实际的应用，大大降低了生产成本，有一定的实用价值。
- The Effect of Gas Ingestion and destroyed Seal on the helical seal 吸气现象与密封破坏现象对螺旋密封的影响
- Cook the meat quickly at first to seal in the juices. 一开始要大火烧肉，以便保存肉汁。
- The putty gives a good seal round the window. 窗户四周泥的油灰密封效果很好。
- Our foil packets seal the flavour in. 我们用锡纸包装以保持原味。
- This document carries the royal seal. 这份文件上盖有王室印章。
- The seal on the bottle has perished. 瓶子的封记已经腐烂。
- He impressed his seal on the wax. 他在火漆上盖了他的私章。
- The deal needs the government's seal of approval. 这一交易需经政府批准。
- Seal (up) the window to prevent draughts. 把窗户封起来以防风。
- A round seal affixed to a papal bull. 印玺一个圆形的教皇的正式宣布训令或法令的封印
- She forgot to seal her letter before mailing it. 她忘记在寄信前将信封上。
- The experience set the seal on their friendship. 这一经历确定了他们的友谊。
- He affixed his seal to the document. 他在文件上盖了印。
- Their handshake was a seal of friendship. 他们的握手是友谊的象徵。
- The helical spring can no longer be used. 盘簧不能再用了。
- Do you know how much a seal coat is? 你知道海豹皮大衣多少钱一件?
- The envelope's seal was torn open. 信封封缄被撕开了。
- The letter bears the seal of the king. 这封信有国王的封印。
- The seal on this bottle is broken. 这个瓶上的密封纸破开了。
