The hot-oxygen aging of styrene series thermoplastic elastomer and its epoxidized elastomer in hot-oxygen aging set were studied. The effects of various structure, epoxide degree, anti-aging agent on the anti-aging property of styrene series thermoplastic elastomer were investigated.

Application of anti-aging agent 688, Rd compound in styrene butadiene rubber production

防老剂688，RD复合物在丁苯橡胶生产中的应用

These same men can be found there day after day and, strangely enough, each one of these men had been a man of affairs and wealth, successful in business and respected in the community.

奇怪的是，这样的人每天都能见到，每一个都像是身兼重职、腰缠万贯，事业成功，饱受社会尊重，无论他们本来是什么人。

The shuttle-type rupturing protection valve of pipeline is an automatic self-acting device, which can fast shut down the pipeline to prevent it from leaking so soon as the leaking flow reaches the set value of protection.

梭式管道爆破保护装置是一种自力式全自动保护装置，当管道泄漏达到设定的保护值时，可迅速截断输送制止泄漏。

To cope with the incorrectness of the mathematical model for the movement of the self-acting ball valve in the reciprocating pump, we rebuilt the accuracy differential equation group to describe the movement of the ball valve.

针对现有往复泵自动球阀运动规律数学模型存在的问题，修正并重建了描述自动球阀运动规律的精确微分方程组。

The chief products include: Bellows seal globe valve, Free-float steam trap, Pilot pressure reducing valve, Pneumatic control valve, Self-acting temperature-sensing valve, Cyclone separator etc.

目前工厂生产的主导产品有：波纹管密封截止阀、自由浮球疏水阀、先导式减压阀、气动调节阀、自作用式温控阀、汽水分离器等。

The mathematical model and computer simulation for the movement of the self-acting ball valve in the reciprocating pump

往复泵自动球阀运动规律数学模型及计算

Design contour curves of the stator transition zone is a technical key-problem for the design of double-acting vane pump of high-performance.

定子过渡曲线的设计是高性能双作用叶片泵设计的技术关键。

The noise question of the double-acting vane pump was discussed, and the related ways were proposed to reduce the vane pump noise.

针对双作用叶片泵出现的噪声问题进行探讨，并提出了降低叶片泵噪声的相关途径。

The double-acting variable-vane pump is a new type of variable pump.

双作用式变量叶片泵是一种新型变量泵。

An optimization design approach of stator contour curves for double-acting vane pump

用最优控制理论设计双作用叶片泵定子曲线

Application about Higher Mode Stator Curve in Double-acting Vane Pump Noise Reduction

高次定子曲线在双作用叶片泵降噪中的应用

Some factors which influence double-acting vane pump noise were discussed.

主要分析了影响双作用叶片泵噪声的因素。

Summing up, after innovating and emulating for pump structure, stator curve and triangular groove of plate shaft, we believe from result it is possible to achieve double acting piston radial pump with lower noises and its effect will be prominent.

综上所述，通过对泵结构的创新设计，定子曲线和配流轴三角槽的仿真分析，可知实现低噪声双作用径向柱塞泵是可能的，并且效果是很明显的。

There are much difference from traditional form of radial piston pumps in design, which are: There are two inlet and two outlet ways to achieve to being double acting piston radial pump;

此泵与传统形式的径向柱塞泵相比有很多不同的地方：配流轴采用两个吸、排油窗口，以实现双作用径向柱塞泵的构想；

The "EPG"( two jaw) and" ETG"( three jaw) parallel gripper lines utilize a double acting piston and rocker arm design.

在“电子节目指南”（两个下巴）和“ETG的”（三下巴）爪平行线利用了双动活塞和摇臂的设计。

The PG Series is low profile with true parallel motion that is generated by a pinion mechanism powered by a double acting piston.

在PG系列是低姿态具有真正的平行的议案是由双动活塞驱动的齿轮机制产生。

Aiming at how to reduce the pump noises, a new type of double acting piston radial pump with lower noises is designed here.

就针对如何降低泵的噪声问题，本人设计出了一种新型的低噪声双作用径向柱塞泵。

The AG series angular gripper utilizes a double acting piston with a dual pivot system.

该公司系列角手爪采用了双轴系统活塞双作用。

The model is evaluated by comparing simulation results to Stirling engine test data, which were obtained from a four cylinder double acting Stirling engine.

结合某型4缸双作用斯特林发动机，开展了发动机的仿真研究和试验研究，研究结果表明，仿真计算的结果与实测值是基本吻合的，从而验证了本文所建立的非线性模型的有效性。

Double-acting Piston Pump with Two-step Output Pressure Driven by Hand Lever

手动杠杆式双作用双级柱塞泵