The process of reflection does not in itself involve any energy loss .
反射过程本身不存在任何能量损耗。
The process of reflection does not in itself involve any energy loss.
反射过程本身不存在任何能量损耗。
His gain and loss deserve our summary and reflection.
其得失值得我们认真总结与思考。
Unique ultra pure copper mirror, low reflection, heat loss is small.
特有超纯铜镜面，低反射，热损小。
Unique ultra pure copper mirror, low reflection, heat loss is small.
特有超纯铜镜面，低反射，热损小。
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