though by no means the only factors in halitosis , the volatile sulfur compounds produced by bacterial metabolism are a prime suspect.

but, since the late 1700s, compounds of the metal have also been used to treat leukaemia.

但是从十八世纪后期，金属配合物就用来治疗白血病。

and there must be simple substances, since there are compounds; for a compound is nothing but a collection or aggregate of simple things.

由于存在复合物，因此必然存在单纯物，所谓复合物，即单纯物的集合。

indirect photometric detection in ce is often employed for detection of compounds that lack of suitable chromophores.

间接光度检测通常是用来检测并行工程的化合物，缺乏合适的发色团。

developing an efficient synthetic route to natural product compounds and their analogs is often an essential step in drug development.

发展一种自然产物复合物以及类似物的有效合成途径在药物研制过程中经常是必需的步骤。

one of these studies has found that of the ten licensed compounds tested, only azt inhibited replication of xmrv.

其中一个研究已发现在十个已测的得到批准的混合物中，只有AZT（艾滋病防护药）抑制了XMRV的繁殖。

because compounds of this type contain only single bonds they are often referred to as saturated hydrocarbons.

因为这类化合物只含有单键，所以它们常被称为饱和烃。3.Some are new compounds which have been used for only a few years.其中一些化合物是近几年开始使用的。

smoke rose into the night sky from one of the attacked compounds, and a helicopter circled overhead, scanning the ground with a searchlight.

被引爆的居民楼处浓烟直冲云霄，直升机在楼上空盘旋，探照灯来回搜索地面。

however, the prediction was remarkably accurate, if not a bit understated, for the reactivity of these compounds.

然而，预测是非常准确的，如果不是有点低估，对这些化合物反应。

in this work we carry out a study of pattern recognition to detect the microbiological activity in a group of heterogeneous compounds.

在这项工作中，我们进行研究的模式识别检测微生物活性的一组异质性的化合物。

the food is allowed to dry, and then is usually sprayed with fat, digests , or other compounds to make it more palatable.

然后，狗干粮将被烘干，一般上生产商都会喷洒一些油脂、消化液，或者其他化合物使它更加美味。

the seemingly simple meaning construction of nominal compounds turns out to be very complex indeed.

名词性合成词的意义建构是一个看似简单，实际上非常复杂的过程。

the area, on beijing's northeast side, contained two or three nearby compounds, and several other expat housing clusters a few miles north.

这个地区位于北京东北部，附近有两三个小区，北边几英里的地方还有几个外国人居住区。

many useful compilations have been made of these various chemical compounds that have been studied, and of their practical applications.

对所研究的这些不同的化合物和它们的实际应用，已有很多有用的专著。5.To our knowledge, however, it has never been used for reductive amination of carbonyl compounds, nor for reduction of pre-formed imines.可是据我们所知，它还从来没有被用于羰基的还原氨化和用于一个已制亚胺的还原。

conclusion the optimal drug crystal is the best form of a solid compounds used for drugs.

结论优势药物晶型是固体化学药物的最佳应用形式。

this was a tactical version of an argus device: a portable laser spectrometer used to sniff out traces of explosive chemical compounds.

这是ARGUS装置的战术版本：一个便携式激光分光仪，用于探测爆炸性化合物的踪迹。

worldwide, government are imposing increasingly severe limits on how much of those compounds fuels can contain.

世界各国政府对燃料中硫氮化合物含量的限制越来越严格。

this isn't a gold-taps, swagged curtains, toile de jouy wallpaper vision of parisian luxury.

这里没有巴黎奢侈酒店那种金制水龙头、帷幕窗帘和淡底印花亚麻布的墙纸。

on the protection and rational use of china's tillable field resource

论我国耕地资源的保护与利用

paradox and countermeasures of tillable land protection policies in china

我国耕地保护政策的悖论与对策初探

on urbanization vs protection of tillable land

论城市化与耕地保护