要求埃克·西尔能源公司关掉这个地区的四个燃煤发电机组，把另一个燃煤机组更换为燃气机组，并新建一个燃气发电厂，以符合联邦的清洁能源标准。
It calls for Xcel Energy to close four coal-fired units in the region, switch another to natural gas and build a gas-fired plant to help meet federal clean-air standards.
PBPBGDL型泵配备了本公司生产的B5标准轴屏蔽电机，通用程度高，检修维护时极为方便。
PBPBGDL pump equipped with the company's B5 standard shielded motor shaft, a high degree of general-purpose, repair and maintenance is extremely convenient.
美国约曼公司严格遵守这些限制，并强烈建议这些限制也能够成为潜水污水泵市场的电机额定参数标准。
Yeomans strictly practices these limits and strongly suggests they also be the stanDard for motor ratings in the submersible wastewater pump market.
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