in steroid acetates the influence of the co grouping upon the symmetrical mode is small. 在甾醇乙酸酯中，CO基团对对称形式的影响较小。
After the co conversion step practically all the carbon from the feedstock is in the form of carbon dioxide . 在CO变换之后，实际上在进料中所有的碳都呈二氧化碳的状态。
Evidence suggestive of an association between clinical coronary disease and co exposure includes the following . 显示临床心血管病与一氧化碳暴露之间具有关系的证据，有如下几个方面。
Most studies of co effects have administered co at relatively high concentrations for short periods of time . 大多数有关CO影响方面的研究工作是在CO较高浓度下，暴露较短的时间条件下进行的。
Co is a dangerously poisonous gas that is emitted into the air in relatively large quantities by the automobile engine . 一氧化碳（CO）是一种由汽车发动机以相对大的量排放到空气中的危险污染气体。
Differences in case fatality between high and low pollution areas could be due to many factors other than co concentrations . 轻、重污染区致死病的方面的差别可能是一氧化碳浓度以外的许多因素所造成的。
There may be an association between ambient co levels and the incidence of myocardial infarction or sudden death, or the case-fatality percentages . 环境中一氧化碳含量与心肌梗塞发病率，或猝死率、或与致死病例百分比之间也许存在某种关系。
Individuals with cerebral vascular disease and potential reduction in the supply of oxygen to high cerebral centers may be another group susceptible to high levels of co . 脑血管病患者和潜在性盲级脑中心供氧减小者，可能是另一类对高含量一氧化碳敏感的人。
exposures to high concentrations of co impair the function of the heart, brain, and exercising skeletal muscles by compromising transport and delivery. 暴露于高浓度的一氧化碳之下，由于损害了氧的运输与传递，心脏、脑和运动骨胳肌肉的功能受到损害。
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