3 - 4 - inch flat diaphragm type or extend type diaphragm many filled oil choose , where may conform to various application requirements damping is adjustable 3 - ， 4 -英寸平膜片式或伸出式膜片，多种灌充液选择，可满足各种应用要求，阻尼可调
3 - 4 - inch of flat diaphragm type or extend type diaphragm many filled oil choose , where may conform to various application requirements damping is adjustable 3 - ， 4 -英寸平膜片式或伸出式膜片，多种灌充液选择，可满足各种应用要求，阻尼可调
An extended type descriptor is a custom type descriptor that offers properties that other objects have added to this object but are not actually defined on the object 扩展类型说明符是一个自定义类型说明符，它提供其他对象添加给此对象但没有在此对象上实际定义的属性。
An extended type descriptor is a custom type descriptor that offers properties that other objects have added to this object , but that are not actually defined on the object 扩展类型说明符是一个自定义类型说明符，用于提供其他对象已添加到此对象上但尚未在此对象上实际定义的属性。
