These valves are referred to as second generation diaphragm valves because basic changes in the valve design have been incorporated to resolve the deficiencies of the earlier diaphragm valves.
因为阀门设计产生了基本的变化，以克服较早的隔膜阀的缺点，这些阀门被称为第二代隔膜阀。
Pressure Relief Valve sized and installed in accordance with Local Codes must be incorporated in the system.
根据当地规定进行的压力安全阀选型和安装必须与系统相匹配。
On abroad, impact valves incorporated in air impact molding machine are mainly disc valve and grid valve. Each of these has its own characteristic.
国外的空气冲击造型机所使用的冲击阀，主要有圆盘阀及栅格阀两种，其各有特点。
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