Flammable gas found in the relay indicates some internal fault such as overheating or arcing , whereas air found in the relay may only indicate low oil level or a leak .
Dopamine receptors seem to track possibilities-an arcing tennis ball that may land in or out-and how expected or unexpected they are .
多巴胺受体有着跟踪潜力网球的弧线球会落在界内还是界外是怎样期待还是不期待他们的出现。
The design of vacuum arcing chamber and insulation support sheath pipe is compact , because the outlet line conduct pole is coated silicon rubber , it can be suitable for bad weather and pollution environment .