They wanted to build a waveguide, a structure designed to send light in a particular direction, by drilling carefully spaced holes in a gallium arsenide crystal.

他们只是想通过在砷化镓晶体上钻一些有着细心安排间距的小孔来制造波导（一种能令光传播到特定方向的结构）。

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Everyone must be armed at all times when outside the structure, and firearms training and drilling are scheduled for all base personnel.

任何人在基地外活动时都必须全服武装。所有基地人员都必须参加武器训练和演戏。

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May provide other drilling services, such as repair or dismantling of existing water well structure, elevator shaft drilling and hydro pole drilling.

可能会提供其他的钻井服务，如维修或拆除现有水井结构，电梯井钻井和水力极钻井。

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It was at the Piper Alpha drilling structure in the North Sea.

VOA: special.2009.03.22

McMoran has since drilled a second well into Davy Jones (using a fatter pipe), proving that the reservoir structure stretches over 20, 000 acres, and is now drilling a second Blackbeard well, currently at a depth of 25, 200 feet.

FORBES: Updated 11:30 Central.

But, by drilling a series of evenly spaced holes into the wire, Dr Lim has created a periodic structure with a band gap that blocks such light.

ECONOMIST: New-age crystals