Only the new device is housed in sealed water proof case.
只有这种新装置才具有密封防水的外壳。
Only the new device is housed in sealed water proof case .
只有这种新装置才具有密封防水的外壳。
The paper introduces a protective device for longitudinal tear-proof of belt.
介绍了一种防胶带纵向撕裂保护装置。
The paper introduces a protective device for longitudinal tear-proof of belt.
介绍了一种防胶带纵向撕裂保护装置。
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