screened spark plug

... 电阻型火花塞 resistor type spark plug 屏蔽型火花塞 screened spark plug 半导体火花塞 semiconductor spark plug ...

 resistor type spark plug

... seppresssed type spark plug 电阻型火花塞 resistor type spark plug 屏蔽型火花塞 screened spark plug 半导体火花塞 ...