By using the similarity metric, valves can be classified into groups. Contrasted parameters between products group and new product needs, information of similarity product will be found out.

通过对产品间相似性参数的研究可以将阀门产品分为若干产品组，通过对新产品设计任务的参数值与各组产品参数值的对比，就可以迅速得到相似产品的信息。

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Watts product specifications in U. S. customary units and metric are approximate and are provided for reference only.

美国瓦茨产品的规格说明采用美国常用的单位，所采用近似的公制单位仅用于参考。

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Two-and three-dimensional Euclidean Spaces are metric Spaces as are inner product Spaces vector Spaces and certain topological Spaces.

二维和三维的欧几里德空间是度量空间。另外，内乘空间、向量空间以及某些拓扑空间等也都是度量空间。

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After that, continue following up if and when when you have news to share (e.g. a product launch, key metric that you hit, commitment from a notable investor).

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In any case, web traffic is probably not even the most telling metric for a company like Foursquare, whose primary product is a native mobile app.

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In many of your metrics revenue, new users, time spent using your product the rate of change can be more important than the metric itself.

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