| 1. | Intelligent door opener sy - ii intelligent door opener sy - iii 思源智能开门机sy - ii
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| 2. | China national railway s steam locomotive sy class 中国铁路的蒸汽机车上游型
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| 3. | Networking specifications for digital radio - relay sy - stems 数字微波接力通信系统进网要求
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| 4. | Satellite - inertial guidance integrated positioning sy 惯导组合定位系统
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| 5. | An infrared automatic brake control sy stem 红外线车辆自动刹车控制系统
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| 6. | Errors execution remote computing sy 执行误差,遥程计算系统
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| 7. | Semantic errors remote computing sy 语意误差,遥程计算系统
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| 8. | Sell led lighting sy . . 宁波出口加工区保税物流试. .
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| 9. | Optimization on production conditions of fibrinolysin by bacillus subtilis sy 豆豉纤溶酶产生菌的产酶条件优化
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| 10. | Sum - of - the - years - digits method sy 年数总和法
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