Methods 55 patients were treated by venous external valvuloplasty on the first valve of superficial femoral vein with PTFE.是什么意思_Methods 55 patients were treated by venous external valvuloplasty on the first valve of superficial femoral vein with PTFE.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句