工时利用
But the cost of wind power per kilowatt-hour ( kWh) is still higher than conventional energy significantly, which seriously restricted the development and utilization of wind energy.
但是,目前风力发电每千瓦小时(kWh)的成本明显高于常规能源,其中运行维护费用超过总收益的10%,严重制约了风能的开发和利用。
While, the evaluating for utilization rate of large precise instrument in the past only focused on the utilization of machine-hour, this is not scientific and comprehensive.
但对于大型精密仪器设备的利用率的考核往往只重视机时的利用情况,这是欠科学、不全面的。
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