There is only one cloud in the sky, but it curtains it from pole to pole . 天上虽然只有一片浮云，这片浮云却把天空遮得无缝无隙。
After a rain part of the water seeps into these openings and percolates beneath the land surface . 雨后，部分的水就渗进这些洞隙，并在地底下渗透。
From an opening between the trees he could overlook all the lower country for many of rich woodland . 从树隙中，他可以俯视连绵数英里的整片密密的树林。
No convincing hypothesis of the origin of rilles exist as yet, but some suggestions have been advanced . 至今没有一种假说可以有力地说明月隙的起源，但有些见解是新颖的。
Therefore, the magnetomotive force in the air gap is essentially proportional to the primary ampereturns squared . 所以，气隙中的磁动势实际上与初级安匝数的平方成正比。
the bandgap of the double heterostructure was only 0. 86μm, yet up to 1ma of photo-current was detected. 双异质结的带隙仅为086m，迄今探测到的光电达1mA。
He used an oscillating circuit containing a spark gap as a generator, and a similar circuit as a detector . 他利用一个振荡电路，其中包括一个电花隙作为发生器，并用另一个相似的电路作为探测器。
The advantage of electro-absorption as a detector is that it is not necessary to fabricate a localized region of different bandgap . 利用电吸收制作探测器的优点在于不必制备出有不同带隙的局部区域。
Analysis on band gap of one - dimensional photonic crystal 一维光子晶体的带隙分析
