It is theoretically considered that reservoir gas-bearing makes interval transit time porosity and density porosity increase and neutron porosity decrease.

理论上认为，储层含气使声波时差孔隙度和密度孔隙度增大，使中子孔隙度减少。

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This paper summarized the work of other relevant issues, achieving rolling bearing fault diagnosis and classify of locomotive in-transit.

通过分析轴承发出的声学信号来实现对各种不同类型故障的诊断与分类。

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Compared with the currently used catch basin cover, the device features light weight, easy storage and transit, high bearing strength, and simple, fast and reliable installation and adjustment.

与现今使用的窨井盖相比，它还自重量轻运储便利承压强度高并安装调整简单快捷可靠。

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