成分的

The core technology is reasonable to determine their draft tube diameter and disc bottom outlet aperture ratio, the ratio determines the performance of disc movement and motion energy.

电动截止阀其核心技术是合理确定其导流管直径与阀瓣底孔孔径的比值，该比值决定了阀瓣的动作性能和动作能耗。

Because it allows the body the three lipids (cholesterol,β-lipoprotein, triglyceride) was significantly decreased, which can improve vasomotor function, but also the lifting of the central nervous tension.

因为它可使体内三项血脂(胆固醇、β-脂蛋白、甘油三脂)明显下降，从而能改善血管舒缩功能，还可以解除中枢神经的紧张度。