change in source of supply
... change in value of currency 币值变动 change in source of supply 货源变更 change in type of geosyncline 地槽类型转化 ...
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change in source of supply
供给来源的变化
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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It is proved that under certain conditions, the periodic change of heat supply from heat source has caused little fluctuation in room temperature, and will not influence heat-supply quality.
证明了在一定条件下，热源供热量周期性变化引起的室内温度的波动幅度有限，不影响供热质量。
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