rescue bell的意思|示意
救生钟
rescue bell相关短语
1、 submarine rescue bell 潜水救生钟
2、 diving rescue bell 救生钟
3、 rescue diving bell 救生潜水钟
rescue bell相关例句
In this paper , the sealing ability for rescue bell is analyzed under the whole mating process.
对接密封性能可靠是救生钟安全使用的关键环节之一.
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