Some of the research we did studied earphones that completely seal up the ear canal.
经过我们研究，发现有的耳塞能完全密封住耳槽。
It completely makes up for past PTFE difficult to seal and processing inconvenient, and yoke is casted into a model using structure to valve with better robustness and usability.
并且支架也是采用铸造成型结构，使得阀门具有更好的牢固性和使用性。
It completely makes up for past PTFE difficult to seal and processing inconvenient, and yoke is cast into a model using structure to make valve better robustness and usability.
并且支架也是采用铸造成型结构，使得阀门具有更好的牢固性和使用性。
It completely makes up for past PTFE difficult to seal and processing inconvenient , and yoke is castted into a model using structure to make valve better robustness and usability.
并且支架也是采用铸造成型结构，使得阀门具有更好的牢固性和使用性。
It completely makes up for past PTFE difficult to seal and processing inconvenient , and yoke is castted into a model using structure to make valve better robustness and usability.
并且支架也是采用铸造成型结构，使得阀门具有更好的牢固性和使用性。
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