V-ball valve is the first valve design of the regulator, after a very long time usage, the manufacture technology is already matured.
形球阀作为最早设计出的调节性阀门，经过了很长时间的使用，制造的技术已经成熟。
After a VERY long, very alliterative introduction, it is my very great pleasure to meet you, and you may call me V.
在经过无比漫长的头韵的引介之后，我非常高兴遇到你，你可以称我为V。
V-ball valve is the first valve design of the regulator, after a very long time usage, the manufacture technology is already matured.
V形球阀作为最早设计出的调节性阀门，经过了很长时间的使用，制造的技术已经成熟。
V-ball valve is the first valve design of the regulator, after a very long time usage, the manufacture technology is already matured.
V形球阀作为最早设计出的调节性阀门，经过了很长时间的使用，制造的技术已经成熟。
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