The valve shaft adopts the halfaxis 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。
2
This paper describes a computerized numerical control system for a two and a halfaxis 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。
3
A screw gear type differential mechanism includes a differential carrier, an operculum, a main reducing gear driven gear, left and right halfaxis gears, etc.