The results show that BP artificial neural network can be used in predicting mechanical properties and grain size of materials after superplastic forming and its predicting error is less than 7%.

结果表明，BP神经网络用于材料超塑性变形后的力学性能及晶粒尺寸预测是可行的，其预测误差小于7%。

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The size of the spheres can be tailored to scatter particular wavelengths of light-a useful property for security applications in which it is important that materials can be identified precisely.

聚苯乙烯球的大小可以被改变以适合散射特定波长的光，一种非常重要的可用于安全领域的特性，它能使材料被准确地识别。

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Chopsticks, which are roughly uniform in size throughout China, can be made of a variety of materials, including bamboo, wood, lacquer, jade, ivory, plastic, aluminum, silver and gold.

全国各地的筷子大小基本一样，而所用的材料的种类则各有不同，所选材料有竹子、木材、漆器、玉石、象牙、塑料、铝、银、金等。

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We can tell you that the phone is light, thin and feels good in the hand -- it slots somewhere between the One S and the One X in terms of size, and looks nice despite being made of cheaper materials than its stablemates.

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These consume an order of magnitude greater materials and are key to market size in the outer years, but carry extensive execution risk due to complexities described in our whitepaper.

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All three Android-powered smartphones are built with top-of-the-line materials, are small in size, big on battery life and packed to the gills with the best experiences Google has to offer.

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