1)indicator pipe,指示器管2)neon indicator,氖管指示器3)pipe position indicator,管位指示器4)hose indicator,软管指示器5)neon indicator,氖管指示灯，氖管指示器6)pig indicator,清管器指示器
用法和例句
On the basis of studing the method of the impulse test of the distribution transformer, applying neon indicator instead of oscillogram has been introduced.