These flutes have 6 open holes and a lovely bright sound.

笛子有6个吹气孔,奏出的声音响亮清脆.

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All the boxes are not allowed to open holes by electrogas welding.

各种箱盒严禁电气焊开孔.

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Fracturing open holes reduces the cost of well completions and allows earlier production.

裸眼井压裂,可以降低完井成本.

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Seals maintain open holes in the ice so that they can breathe regularly.

海豹的窝都是保持敞开状态的,这样它们可以不时地透气.

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The main piston type oil tank is fixed in the open holes of the upper beam.

主油缸安装在上横梁的安装孔内,为活塞式油缸.

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