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double-acting jack：雙勛千斤頂

雙動錘 Double acting hammer | 雙勛千斤頂 Double acting jack | 雙動式打樁機 Double acting pile driver

double-acting capstan：双动手摇绞盘

double 双重的 | double-acting capstan 双动手摇绞盘 | double-acting cylinder 双作用油缸

double-action press：复动式压力机

double acting compressor 双动式压缩机 | double action press 复动式压力机 | double apron drafting arrangement 双皮圈牵伸装置

double-action press：双动压机

"double action crankless press","双动无曲柄压机" | "double action press","双动压机" | "double alternate set saw","双齿交错锯片"

double-action press：双动冲床

double action clutch 双作用离合器 | double action press 双动冲床 | double action spring bolt 双面弹簧插销

double-action gin：双动式轧棉机

double-action disc harrow 双排式圆盘耙 | double-action gin 双动式轧棉机 | double-action hydraulic drawing press for sheet metal 双动

double-action gin：双动式轧花机

double-action forming 双效成形 | double-action gin 双动式轧花机 | double-action hammer 双作用锤,动力锤

double-action hammer：双作用锤,动力锤

double-action gin 双动式轧花机 | double-action hammer 双作用锤,动力锤 | double-action hinge 双向合页

double-action die：双效冲模

double-action comber 双动式精梳机 | double-action die 双效冲模 | double-action disc harrow (双列圆盘靶)双功圆盘靶

double-action hinge：双向合页

double-action hammer 双作用锤,动力锤 | double-action hinge 双向合页 | double-action hydraulic press 双动冲压水压机

Plata：普拉塔

如普拉塔(PLATA)地区的皮子品种很多,一般可分为两大类,即干板皮和盐腌皮,干板皮有Sanos、Besse?鄄chos、Maldesechos、Inservi-bles和Garras,质量最好的是Sanos,质量较次的是Garras. 盐腌皮中质量最好的是Mataderos,较次的是Campos.

transistor automatic computer：晶体管自动计算机

transistor amplifier 晶体管放大器 | transistor automatic computer 晶体管自动计算机 | transistor base current 晶体管基极电流