Astaxanthin molecular structure which contains 13 conjugated double bonds, is one kind of extremely unsteady carotenoid.虾青素分子结构中含有13个共轭双键, 是一种极不稳定的类胡萝卜素.This article reviews the research progress of astaxanthin in the la...
Trial producing a austempering ductile iron of oblique wedge to replace steel.试制一种新型的奥氏体──贝氏体球铁斜楔,代替原来的铸钢件.The techniques of austempering and the factors of affect properties of ADI were introduced.本文概述了ADI的 等温淬火工艺和影响ADI...
Opium is classed under the head of narcotic.鸦片是归入麻醉剂一类的东西.Since the birds interbreed they cannot be classed as different species...由于这些鸟进行杂交繁殖，不能把它们归为不同的物种。They classed this insect under the Coleoptera.他们把这种虫列入甲虫类.Other ...
The blood circulates through the body.血液在全身循环.The story circulates among the people.这个故事在人民中流传.During a depression money circulates slowly.在商业萧条时期,货币流通滞缓....