1. Earless species include the elephant seal, harbor seal, harp seal, and leopard seal. 无耳品种包括象海豹、斑海豹、格陵兰海豹和豹形海豹。
2. The pony rod servo seal changes movable seal into static seal. As a result, the seal dependability is increased. 跟随式介杆密封是指变介杆处的密封为静密封，增加了密封的可靠性。
3. The seal of general utility small gasoline engine includes static seal and dynamic seal. Static seal is the main method. 通用小型汽油机的密封既有静密封问题，又有动密封问题，而以静密封为主。
4. The result shows that good seal effect is obtained in the shaft seal of viscose spinning pump with mechanical seal, and the life of shaft seal is prolonged. 使用结果表明，采用该新型机械密封，轴封处密封效果良好，轴封寿命延长。
5. The fly hammer rotating seal is a new weave seal combined with spire drive seal and fly hammer shut down seal, It has an application value in the operation of chemical. 飞锤螺旋密封是一种螺旋动力密封与飞锤停车密封相结合的新型组合密封，在化工生产中有一定应用价值。
网络释义
navy navy blue 藏青色;
open the envelop remove the seal under flying seal 启封;
