指定说明 meaning in Chinese

specify

Option , and specify a description for the code group
选项并为代码组指定说明。
When valves are to be used in vertical pipe runs , this should be clearly specified
如果阀门准备用在垂直管道上，在订购时应该明确指定说明。
Threaded seat rings should be lock welded to the body when used in high velocity ( turbulent ) or thermal cycling services to avoid loosening . please specify
当用于高速流体(湍流)或热循环应用时，为了避免松开，螺纹阀座环应该锁焊在阀体上。请在订购时加以指定说明。
Threaded seat rings in valves in services with high velocity ( turbulent ) flow or thermal cycling should be lock welded to the body to avoid loosening . please specify
当用于高速流体(湍流)或热循环应用时，为了避免松开，螺纹阀座环应该锁焊在阀体上。请在订购时加以指定说明。
Threaded seat rings for valves in services with high velocity ( turbulent ) flow or thermal cycling should be lock welded to the body to avoid loosening . please specify
如果阀门用在高速流体(湍流)或热循环应用环境中，则螺纹阀座环应该锁焊到阀体上，避免松落。请在订购时加以指定说明。