The paper analyses the problems of existing flat gate valve used in dense-medium system pipeline and introduces anti-friction qualities and functions after improvement.
分析了重介质系统管路中平板闸阀存在的问题，介绍了改进后的耐磨特点和性能。
Brief introduction to the working process, the construction characteristics, the applications and the main data's selection & calculation for the single disc, high-performance flat gate valve.
介绍了高温硬密封浮动阀座单闸板平板闸阀的工作原理、结构特点、适用范围及主要技术数据的选取和计算。
The flat bottom gate provides full perimeter seating against the seat, eliminating pocket in the bottom of the seat that can trap process media and prevent the valve from fully closing.
平坦的闸板底部与阀座之间能够实现全周长阀座密封，避免阀座出现可能淤积流体介质、妨碍阀门完全关闭的底部洞隙。
The part is flat, easy to be deformed. We need to find a suitable gate location.
产品是平板件，很容易变形。我们需要找到一个合适的浇口位置；
Contacting surfaces of the gate and body seats must be smooth and flat for effective sealing.
闸板和阀座的接触表面必须光滑、平整，才能有效地密封。
Simon had taken a short lease on a flat in Rutland Gate, mainly because it was round the corner from the office.
赛蒙在卢兰门租了一间短期公寓，因为它就在离办公室不远的街角。
Flat bottom direct design prevents sundries from accumulating, which guarantees valve gate sealing performance for long time use.
平底直通式设计，阀体避免杂物堆积，蝶阀保证长期使用不影响阀门密封性能。
Basis for theories of flat steel gate design, module system and key technique of system design in PSGCAD system is expounded. The process of flat steel gate design is introduced in PSGCAD system.
以平面钢闸门设计理论为依据，阐述了PSGCAD系统的模块系统以及系统设计中的关键技术，介绍PSGCAD系统设计平面闸门的过程。
Taking the plastic injection process of flat part as an example, a new criterion and mathematical model of the gate location optimization method were put forward.
并以等厚平板制件单浇口注射成型工艺为例，建立了针对制件不同几何特征要求的最佳浇口位置的描述方式及相应的数学模型，并给出了优化算法；
Taking the plastic injection process of flat part as an example, a new criterion and mathematical model of the gate location optimization method were put forward.
并以等厚平板制件单浇口注射成型工艺为例，建立了针对制件不同几何特征要求的最佳浇口位置的描述方式及相应的数学模型，并给出了优化算法；
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