研究者们还需要判断嗅觉到底是一种还是两种感觉，一种感觉回应气味本身，另一种感觉记录空气中无味的化学成分。
Researchers have still to decide whether smell is one sense or two—one responding to odours properly and the other registering odourless chemicals in the air.
通过将气味的独特结合，研究中使用的无味食物粉末出现在Sensa体系之中，唯一一个申请专利的减肥体系。
The unique combination of scented, flavorless food sprinkles used in the study is now found in Sensa, the only weight loss system that contains the patent-pending technology.
盐酸林可霉素是一种白色或几乎白色结晶性粉末，是无味或有微弱的气味。
Lincomycin hydrochloride is a white or practically white, crystalline powder and is odorless or has a faint odor.
这些志愿者都被要求嗅装有某一种气味或无味的油罐子，然后再按下按钮表示自己是否闻到什么了。
The participants were asked to sniff a jar containing either one of the three odours or the scentless oil, and then press a button to indicate whether they thought the jar smelled of anything.
介绍了无味煤油精制的新技术、新方法，分析了煤油型无味溶剂油气味的产生因素。
The new refining technologies and methods for production of odorless kerosene are reviewed and the factors influencing the quality of odorless kerosene are analyzed.
白色或接近微黄的自由流动粉末，具有微弱的气味或接近无味。
White or slightly yellowish, free-flowing powder with a faint characteristic Odour and practically no taste.
白色或接近微黄的自由流动粉末，具有微弱的气味或接近无味。
White or slightly yellowish, free-flowing powder with a faint characteristic Odour and practically no taste.
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