By virtue of modern metallograph analyse technology, the size of grain, hardness and residual stress of bevel gear by closed-die cold forging is studied.

借助现代冶金分析技术对闭塞冷锻行星齿轮的晶粒尺寸、硬度变化和残余应力分布规律进行了研究。

youdao

Using the method in Quantification Metallography, the size of grain and hardening particles, volume percentage of inclusions and hardening particles are estimated according to samples.

在解剖被检试样的基础上，运用定量金相学的分析方法，估算了被检部位的晶粒直径、夹杂物体积百分数、强化粒子直径及体积百分数。

youdao

It is shown that the mechanical properties of annealed sample of 2224 aluminum alloy are improved by the combination of solid solution and aging treatment after ECAP, the size of grain is refined.

结果表明，退火态2224铝合金经e CAP挤压后，进行固溶和时效处理，明显提高了合金的力学性能，细化了合金的晶粒。

youdao

And have your vet inject your pet with a tiny microchip implant (it's about the size of a grain of rice).

CNN: Tips for road tripping with pets

Micro chipping involves a vet inserting a tiny device, about the size of a grain of rice, under the dog's skin.

CNN: Give a dog a cell phone

The ultrasound generator used in this technique can focus its energy into a space about the size of a grain of rice.

ECONOMIST: Thermal treatments of cancer are remarkably effective