extension stem-operation 伸长杆操作
stem extension assembly 阀杆延伸组件
stem extension 加长轴杆
valve stem extension 气门杆伸出部
The top flange of an extension stem, plug shaft diameter, and distance across flats on plug shaft are the same size as the valve selected.
订购时，请指明阀门尺寸、规格型号，以及从阀门法兰到延长件法兰顶部的准确距离（用户指定的长度如右图所示）。
In the epicormic shoot stem which passed a growth season, the secondary laticifer differentiation of all the extension parts was accelerated by JA application.
在经过生长期的表皮茎上，施用茉莉酸能够促进各个伸长单位茎中次生乳管的分化。
The extension includes handwheel, non-rising stem, fittings and extensions to allow remote operation normally from above.
加长件包括手轮，暗杆，连接件和加长件，允许在上方进行远程操作。
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