A blue square in the upper corner contains 50 white stars.
在左上角的蓝色方块里有50颗星星。
It introduced the methods of dealing with gas accumulation in the upper corner of stope face.
介绍回采工作面上隅角瓦斯积聚的处理方法。
Now the nail's corner on the Well points' location seemed be located at the upper corner of them.
现在对井穴定位中的“爪甲角”应当是指甲端之角;
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