英汉双语例句-生物医药大词典

Chemical fossils (e.g. alkanes and porphyrins) are often the only evidence for life in rocks of PRECAMBRIAN age.

中文意思：
化学化石（烷烃和卟啉）是前寒武纪地层中生命存在的唯一证据。

以下为相关句子列表(点击查看，可以看对应的解释）：

	Chemical dependency can result from many things: alcohol, caffeine , illegal drugs like cocaine , legal drugs like pain killer s.			很多东西会导致化学依耐性的产生：酒精、咖啡因、非法药品，如可卡因，合法药品，如止痛片。
	Chemical dependency can result from many things: alcohol, caffeine, illegal drugs like cocaine, legal drugs like pain killers.			许多东西包括酒精，咖啡因，类似可卡因的非法药物及类似止痛片的合法药物都会招致药物依赖。
	Chemical engineering encompasses its conceptual origins in Great Britain,subsequent struggle for survival in the United States,and concludes with a cornucopia of contributions made in this century.			中文：化学工程的概念起源于英国，继而在美国开始立足发展，最后在本世纪成为一门有重大贡献的学科。
	Chemical fertilization , fro example , helps to produce better crops , but is harmful to the environment .			例如，化学施肥有助于提高粮食产量，但对环境有害。
	Chemical fiber yarn includes pure polyester yarn, pure polyester sewing thread, acrylic yarn, and others.			化纤纱线有纯涤纶纱、纯涤纶纱缝纫线、晴纶纱等。
	Chemical fossils (e.g. alkanes and porphyrins) are often the only evidence for life in rocks of PRECAMBRIAN age.			化学化石（烷烃和卟啉）是前寒武纪地层中生命存在的唯一证据。
	Chemical fossils Particularly resistant organic chemicals present in geological strata that are thought to indicate the existence of life in the period when the rocks were formed.			化学化石：残存于地质地层中的有机化学物质，当这样的地层被发现时，可以预测出那个地层形成时期的生命活动现象。
	Chemical industry is the backbone estate of Daoxu town, chemical industry is 70 percent of all the town's economic aggregate.			道墟镇是浙东著名的工业强镇，目前全镇共有企业412家，总净资产达到了9.3亿以上。
	Chemical industry: sodium carbonate (the production of hydrochloric acid, hypo-fluoric acid and secondary chemicals); the production of fluoride and chemical fertilizers; circulation of reaction liquid in gas absorption tower; grease extraction (sulfuric			化学工业：碳酸钠化工业（盐酸、次氟酸、二次化学品的生产）；氟化物、化学肥料的生产；气体吸收塔反应液体循环；油脂提炼（硫酸）；废酸类的回收及再生系统；化工厂和运输车辆间的强酸类输送。
	Chemical lab experience is necessary.			有化学实验室工作经验。
	Chemical mechanism on formation of secondary organic aerosols involves in photooxidation process of volatile organic compounds and subsequent chemical reaction, which directly lead to increase of ozone concentration and to formation of secondary organic a			二次有机气溶胶形成的化学机理主要涉及到挥发性有机化合物的光氧化过程及其一系列的后续反应，它们导致了对流层中臭氧浓度的增加和二次有机气溶胶的形成。