For valves intended for certain applications, e.g. end of line service, an obturator strength test in accordance with EN12266-2:2002,Test P20 shall be carried out.是什么意思_For valves intended for certain applications, e.g. end of line service, an obturator strength test in accordance with EN12266-2:2002,Test P20 shall be carried out.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句