系统研究了机引犁铧闭式型槽精密辊锻技术。
The technology of precision roll forging by closed die groove of machine driven plough share are researched systematically.
该双向玻璃纤维引拔槽楔 具有经纬双向强度，热态性能更好。
The bidirectional glass fiber drawing groove wedge has both longitudinal strength and latitudinal strength, and better thermal state performance;
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