The billet was at first pre formed and close-die forged on different hydraulic presses and then the forging was rolled, punched and bended. Such a production line will be the most efficient.
钢坯先在一台水压机上预成形制坯，再在另一台压机上模锻，经轧制扩径后冲孔压弯。
The hydraulic characteristics of the smooth spillway, the stepped spillway and the pre-aerator stepped spillway have been studied respectively.
对光滑溢洪道、阶梯溢洪道和前置掺气坎式阶梯溢洪道水力特性进行了对比研究。
The real effect the Hydraulic load does for the effect of water biological pre-treatment by elastic packing.
水力负荷的大小对于弹性填料生物预处理净化水质的效果随不同项目有不同的影响。
The method of pre-embedded steel bar is used in the supporting of hydraulic channel inverted siphon torsion slope formwork, which solved the problem of torsion slope support.
水工渠道倒虹吸扭坡模板的支撑采用预埋筋支撑方法，很好地解决了扭坡模板支护问题。
For the convenience of casting, machining, transporting, etc, the beam of large-scale hydraulic forging press has always been designed as combined structure and connected with pre-stress bolts.
大型液压机的横梁由于铸造、加工、运输等原因，大多设计成组合结构，采用预紧螺栓组连接。
If the hydraulic noise in the, valve plate is required to be eliminated, the characteristics of preloading and pre-releasing of the cylinder must be hyperbolic type.
如果想消除液压配流噪声，油缸的预升、释压力特性也必须按双曲线规律变化。
In this paper, a new method based on the well test data and the pre hydraulic forecast production is developed.
本文结合生产实际，介绍了利用试井资料及压前评估值定性、定量进行压裂选层的方法。
In this paper, a new method based on the well test data and the pre hydraulic forecast production is developed. The real field experiments show that the method is reliable and useful.
本文结合生产实际，介绍了利用试井资料及压前评估值定性、定量进行压裂选层的方法。
The billets are straightened by the withdrawal straightener, and transported to the flame cutter or hydraulic shear through the pre-cutting roller table.
铸坯经拉矫机矫直成直坯后，由切前辊道把铸坯送入火焰切割机。
Hydraulic drawing-core mechanism was adopted for two-side of inner-sinking in the die casting die, and pre-resetting mechanism was set to avoid the interference of core slide with ejector pin.
压铸件内凹处两侧采用液压抽芯机构抽芯，为防止滑块型芯与推杆发生干涉而设置了预复位机构；
Hydraulic drawing-core mechanism was adopted for two-side of inner-sinking in the die casting die, and pre-resetting mechanism was set to avoid the interference of core slide with ejector pin.
压铸件内凹处两侧采用液压抽芯机构抽芯，为防止滑块型芯与推杆发生干涉而设置了预复位机构；
应用推荐