In vertical direction, the existence of isolated barrier bed may result in the formation of multiple vertical sequence units, and the development of interlayer oxidation zone and uranium roll.
在垂向上，隔挡层的存在可以导致多个垂向序列单元、层间氧化带和铀矿卷头的发育。
Even if a mosquito somehow managed to penetrate such a barrier, a second light curtain set up around a bed, for example, would provide further protection.
即使蚊子能穿过一道此类屏障，第二道光幕，比如说设立在床周围，会提供进一步的保护。
An experimental study was made of three kinds of barrier and burnout layers used in a coal-fired fluidized bed.
对三种用于燃煤流化床的阻挡燃烬层进行了试验研究。
An experimental study was made of three kinds of barrier and burnout layers used in a coal-fired fluidized bed.
对三种用于燃煤流化床的阻挡燃烬层进行了试验研究。
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