Single side safety control, arm locks with tooth type ratchet, multi-safety device, more reliable.
单边控制保险机构，齿轮锁臂装置，多重保险设计，更加安全。
On the basis of research on the tooth -shape of single stage seal, a new type tooth - shape of multistage seal is suggested.
在对磁流体单级密封齿形研究基础上，提出了一种新型多级密封齿形结构。
On the basis of research on the tooth -shape of single stage seal, a new type tooth - shape of multistage seal is suggested.
在对磁流体单级密封齿形研究基础上，提出了一种新型多级密封齿形结构。
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