分析机器人依靠传感器通过测量地表土壤中气味浓度搜索地下气味源的定步长六边形路径算法的不足，对其进行改进。
This paper analyzed the disadvantages of the traditional algorithm of hex-path odor searching algorithm, which can guide a mobile robot with single gas sensor to search for underground odor source.
但是科学家们揭示，鲨鱼鼻孔接受气味的时间比气味的浓度更重要。
But scientists now can show that differences between the time when a shark's nostrils receive smells is more important than the strength of the odors.
在足够高的浓度，许多的气味会导致几乎每个人的鼻腔刺激。
In high enough concentrations, many odors will cause nasal irritation in almost anyone.
水溶液的浓度最高可达55%，通常是40%，称做甲醛水，俗称福尔·马林(formalin)，是有刺激气味的无色液体。
Aqueous solution of the highest concentration of up to 55%, usually 40%, called the formaldehyde water, commonly known as Faure Marin (formalin), is to stimulate the smell of colorless liquid.
气味随温度、浓度及环境的变化而有所改变。
Flavor changed with the change of temperature, concentration and environments.
研究小组发现：在人类气味中占主导地位的四种成分中，有一种叫做壬醛，不知何故，这种成分在两种鸟类的气味采样中也占有很高的浓度。
Of the four ingredients that dominated the human odors, the team found one, called nonanal , that for unknown reasons was also present at high levels in the bird samples.
研究小组发现：在人类气味中占主导地位的四种成分中，有一种叫做壬醛，不知何故，这种成分在两种鸟类的气味采样中也占有很高的浓度。
Of the four ingredients that dominated the human odors, the team found one, called nonanal , that for unknown reasons was also present at high levels in the bird samples.
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