This kind of foot valve features compactness, elegant appearance, high inter-changeability and stable and reliable performance.
本脚踏阀结构紧凑，外表美观，阀的互换性强，性能稳定，可靠。
2
The method of treatment of the double-chambered right ventricle, aneurysm of membranous inter-ventricular septum and aortic valve i…
文章着重讨论了双腔右心室、室间隔膨胀瘤和主动脉关闭不全的治疗方法。
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And the brush of high temperature gas and impact load speeded failure. The cracks on valve sur-face are primarily emerged due to inter crystalline chap, then fatigue pr...