methyl造句

hyl-methyl-butyl barbiturate

The department collects revenue from four categories of dutiable commodities: alcoholic beverages, tobacco, hydrocarbon oil and methyl alcohol.

An organic compound in which the hydrogen of the hydroxyl group of methyl alcohol is replaced by a metal.

Previously, MTBE (methyl tertiary-butyl ether) was the oxygenate of choice, but fell out of favour in 2004 when it was found to contaminate ground water.

Assume the geometry of the eclipsed form to be that given by rigidly rotating one methyl group with respect to the other.

The standard adding recovery ratio of methyl parathion on Chinese chives 'sample reaches 83.5%, and can meet the detecting requirement of residues for the pesticide in vegetables.

The mixture of fungicides and plant growth regulator was used to control tobacco weather fleck, and the test results showed that the mixture of 70% thiophanate-methyl WP and 0.

"Other important glycols include 1,3-butanediol and 1,4-butanediol, used as raw materials for plastics and other chemicals; 2-ethyl-1,3-hexanediol, an insect repellent; and 2-methyl-2-propyl-1,3-propanediol, the raw material of the tranquilizer meprobamate"