The experiments were made possible by a novel, one-layer ion trap cooled to minus 269 C (minus 452 F) with a liquid helium bath.

实验利用了一种单层离子势阱，并将其浸在液氦浴中冷却到零下269摄氏度。

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Objective To evaluate the value of the one-layer suture manual technique in the anus reserved operation for low rectal cancer.

目的探讨单层缝合手法吻合在低位直肠癌保肛手术中的应用价值。

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One corner of the painted Maya pyramid structure at Calakmul, Mexico. One layer of the mural must still be excavated.

墨西哥的卡拉克·穆尔·古玛雅城(Calakmul)，在一个彩色玛雅金字塔的角落里，还有一层壁画仍然需要继续发掘。

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You'd think electronic financial trading would be extra secure, but not so much: One of the most popular application-layer protocols in the financial industry leaves these money applications wide open to attack, according to researchers.

FORBES: Hacking Capitalism

The FCC team found that stacking the coatings one on top of another enhanced the anti-reflective properties of each layer.

CNN: New nano coating boosts solar efficiency

He says the old system was not perfect, but it worked - and he fears the new one will become less effective because of a new layer of management.

BBC: News