The special circumstance of mine limits the abroad application of existing mine video supervising system which is based on fiber medium and video cable medium.
煤矿井下的特殊环境限制了现有的以光纤或视频电缆为传输介质的矿井视频监视系统的推广应用。
The high temperature well-logging optic fiber cable for heavy oil well is a new special cable for oil field testing.
稠油井用耐高温测井光缆是油田测试中使用的一种新型特种光缆。
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