【机】 base of crude oil
oil; petroleum
【化】 petroleum
【医】 coal oil; kerosene oil; mineral glycerin; petroleum; rock oil
【经】 crude oil; petrol; petroleum
go; leave; of; somebody; something; this
base; basic; foundation; key; primary; radix
【化】 group; radical
【医】 base; basement; group; radical
be similar to; genus; kind; species
【医】 group; para-; race
