The valve shaft adopts the half axis structure and the valve plate adopts the girder construction.

阀轴采用半轴结构，阀板采用桁架结构。

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This paper describes a computerized numerical control system for a two and a half axis upright numerical control milling machine.

讨论了一种用于两轴半立式铣床的PC -DSP主从式计算机数控系统。

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A screw gear type differential mechanism includes a differential carrier, an operculum, a main reducing gear driven gear, left and right half axis gears, etc.

本螺旋齿轮式差速器，包括有差速器壳、壳盖，主减速器从动齿轮，左右各一个半轴齿轮等。

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