stem

英[stem]美[stɛm]

n.
1.（花草的）茎，（树木的）干；（叶片﹑ 花朵或果实的）梗，柄
2.状部分，（尤指）高脚酒杯的颈, 烟斗柄.
3.【文】血统
v.
[T]遏制，阻止（液体流动等）

同：	[n.] base, fore, shank, stalk [v.] halt, stanch, staunch

A sheath formed at the node of a stem by the fusion of two stipules,as in the rhubarb plant.
托叶鞘两片托叶接合于枝干的结上而形成的一种鞘，如在大黄属植物中。收藏
Rising stem-outside screw and yoke is preferred in iron multi-turn valves.
明杆－外螺纹和支架结构是铸铁多回转阀门的首选结构。收藏
Valve sticking. Gum or carbon deposits on the valve stem will cause valve sticking. Excessive valve-stem clearance speeds up valve deposits.
气门沾着:气门杆上的胶质或积炭是造成沾着的原因。气门杆间隙过大会加速气门的积炭。收藏
Double D Stem Configuration: Gives positive attachment for handles or actuators.
双D阀杆结构:非常适用于连接操作手柄或执行机构。收藏
Adult stem cells are thought by scientists to be less versatile than their embryonic equivalents
在科学家看来，成人干细胞没有胚胎干细胞那样神通广大。收藏

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(linguistics) the form of a word after all affixes are removed
- thematic vowels are part of the stem
[同] base, radical, root, root word, stem, theme
a slender or elongated structure that supports a plant or fungus or a plant part or plant organ
[同] stalk, stem

grow out of, have roots in, originate in
- The increase in the national debt stems from the last war
cause to point inward
- stem your skis

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