﻿;******英文受信練習*******
;**Constitution of the I.T.U.*****
;****chapter 7 , article 45 , 199-3
hr hr [bt] further, the member states recognize the necessity of taking all practicable steps to prevent the operation of electrical apparatus and installations of all kinds from causing harmful interference to the radio services or communications mentioned in no. 197 above. [ar]  
