The procedure of pipe laser oxygen cutting and the model of generation of striation on cut surface were studied respectively.

了研究管材激光有氧切割过程和切割表面条纹形成模型。

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NC flame cutting: CNC flame cutting is numerical control machine tool use gas with oxygen or gasoline in metal materials with oxygen cut a way to cut.

数控火焰切割：数控火焰切割是数控机床利用燃气配氧气或者汽油配氧气进行金属材料切割的一种切割方式。

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Ligation - a tight rubber band is wrapped around the haemorrhoids to cut off their blood supply. Starved of oxygen and nutrients, the haemorrhoids shrivel.

橡圈结扎法-用一个橡皮圈去结扎痔团截断它的血运，痔会因缺血和缺氧而枯萎。

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The deformed cells block blood vessels and cut off the flow of oxygen to tissue in the body.

VOA: special.2009.12.16

z And what you need to remember is if the z 8 is equal to eight or greater, such as oxygen being the cut-off point, this sigma 2 p orbital is actually lower in energy than the pi 2 p orbitals, the molecular orbitals.

你们要记住如果,等于或者大于，就像O是分界点，这时sigma2p轨道,比π2p轨道能量更低。

麻省理工公开课 - 化学原理课程节选

One of these involves shooting oxygen ions (electrically charged atoms) into the silicon wafers from which chips are subsequently cut.

ECONOMIST: Chip technology