Common troubles and troubleshooting of type BT-99 water analyzer were introduced. The possible causes to produce the troubles and troubleshooting methods were proposed.

介绍BT - 99型水质分析仪在使用过程中经常出现的故障，分析了故障产生的可能原因，并提出了故障排除方法。

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Walsh said most researchers in the field had accepted consulting fees from the companies, because "99 percent of the funding to support this type of research is from pharmaceutical companies."

Walsh说这个领域的大多数研究者都接受药厂支付的咨询费，因为“这类研究经费有99%是医药公司资助的。”

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Imagine that you are learning about a type of medication that is 99 percent effective, for instance. You should be equally likely to use it if it is described as 1 percent ineffective.

假设你正在了解一种99%有效的药物，如果它被描述成一种1%无效的药物你也应该能同样的使用这种药物。

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Naturally occurring stuff is 0.7% one type, 99.3% the other.

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Of the H3N2 viruses tested at that point, 99.4% matched the type that the vaccine protects against.

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In Shell's 99-year history Van der Veer is the first of his type--a sole chief executive, ruling from headquarters in the Hague.

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