一项发表于上周的报告暗示，早期的类星体呈现出的景观，是被负载着数以吨级的气体的巨大星系所围绕，这些星系能够为恒星的形成提供燃料，并且哺育黑洞。
Early quasars appear to be surrounded by large galaxies loaded with tons of gas, which fuels star formation and feeds the black holes, a report last week suggested.
当输出负载变化时，如何采取适当的控制策略控制加湿器出口气体的湿度是燃料电池技术中的一个难题。
One of the problems of fuel cell technology is how to control the humidity of the outlet gases of the humidifier.
结果表明，通过对反应室压力、刻蚀气体流量和射频功率的调节，可以降低微负载效应的影响，得到良好的刻蚀均匀性。
It is proved that the uniformity of etch rate can be improved and the effect of micro load can be decreased by adjusting the value of chamber pressure, gas flow rate and RF power properly.
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