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The new preparation method of Al-Ti-C grain refiner was studied with aluminium ingot,potassium hexafluorotitanate,aluminium powder,hexachloroethane and carbon powder.

提出了利用铝锭、氟钛酸钾、铝粉、六氯乙烷和碳粉制备铝钛碳新方法。

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A preparation method to reveal the grain boundrie of zirconium and zircaloy for metallographic and scanning electronic microscope analysis is introduced.

介绍了一种能清楚显示锆及锆合金金相及扫电镜分析试制备技术。

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What is obtained with the forging waste heat normalizing and controlled cooling technique is the coarse stable structure in a 20CrMnTi gear, but its cutability is good.

余热正火和常规正火处理后,再经同艺进行渗碳、淬火和回火处理,试验证明:其渗层和心部组织、度及机械性能均相同。

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The results show that the fine grain process of casting has some effects on the behavior of response to cyclic stress, such as the increase in rigidification exponential of fine grains.

实验表明,对循环应力响应有一定影响,比如硬指数提高。同时疲劳过渡寿命降低。

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TED-Ed(视频版)

This structure has the added benefit of lacking the grain boundaries that most metals have.

它没有晶粒边界,数金属有晶粒边界。

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TED-Ed(视频版)

Those are weak spots where the material is more susceptible to scratches or corrosion.

晶粒边界数金属最容被刮破的脆弱的地方,这些地方也容被腐蚀。

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美食家基地

You can seed it with more cold chocolate so you can chop up chocolate, put more cold chocolate in.

你可以加入晶粒物质使更冷凝,这样你就可以把切碎,放更的冷进去。

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学生科学报

It just has larger and more crystalline grains.

它只具有更和更晶粒

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古生物学讲座

So because the energy levels are high, the grain size is coarser.

因此,由于能量水平较高,晶粒尺寸较粗。

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奇趣工程百科

The superstructure is made of a torsion-resistant welded structure fabricated from high strength fine grained structural steel.

上部结构采用高强度细晶粒结构钢制成的抗扭焊接结构。

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