利用高精度研磨不锈钢空心浮球在阀腔内随着凝结水的液位变化开启或关闭阀门。
The drain valve is opened or closed by taking advantage of the change of liquid level of condensate water with the high-precision grinding stainless steel hollow float ball in the valve cavity.
印度巴布·内斯·瓦尔一位妇女正准备用石杵研磨红色的矿物颜料。
A woman in Bhubaneswar, India, prepares to grind red mineral pigment on a stone pestle.
应用推荐