Analysis on the mechanical properties and its influence factors for boron carbide

Boron carbide coatings were deposited via vacuum plasma spraying, and then their microstructure, phase composition, hardness and bonding strength were examined.

本文采用真空等离子喷涂方法制备碳化硼涂层，对涂层的结构、组成、硬度及结合强度进行了观察与测定。

Activated sintering and sintering kinetics of boron carbide with carbon as activator

掺碳碳化硼活化烧结及其动力学

The effects of solvent of Grignard reagent, pyridine hydrochloride and boron tribromide on yield of product were investigated.

考察了格氏试剂的溶剂、反应物盐酸吡啶和三溴化硼对脱甲氧基收率的影响。

Properties of boron nitride phosphide photoelectric films and theirs application in visible-blind UV detector

BN xP（1-x）光电薄膜的性能及在紫外探测中的应用

The results show that the relatively low content of Carbon 、 Manganese 、 Vanadium 、 Boron in deposited metal is a direct cause which promotes formation of ferrite net in weld metal.

结果表明，熔敷金属C、Mn、V、B含量偏低是促使焊缝金属产生网状铁素体的直接原因。

The effect of zinc, manganese, molybdenum, boron applied as isolation or combination on yield, protein content and oil content in different soybean genetic types was observed.

探讨了锌、锰、钼、硼4种微量元素肥料单独及配合施用对不同基因型大豆籽粒蛋白质含量、脂肪含量及产量的影响。

When about 2% chromium content adds to the high manganese steel with trace boron, the integrated performance is better.

含硼高锰钢中加入2%左右的铬，综合性能较好。

Effect of water toughening temperature on microstructure and properties of super-high manganese steel with trace boron

水韧处理温度对含硼超高锰钢组织和性能的影响

PH, the content of soil organic and nutritive elements and the soil texture are the impacting on the production of Chinese chestnut; iron, manganese, boron and other trace nutritive element are the important impacting on the character of Chinese chestnut.

土壤pH值、土壤有机质和营养元素含量及质地等理化性质与条件是影响板栗产量的因素，而铁、锰、硼等微量元素的含量则是影响板栗品质的重要因素。

The experiment has shown that heat treatment can change the pattern and distribution of manganese& boron alloyed white cast iron carbide and the effect has close relationship with the treatment technique heat parameter and the pattern of the cast carbide.

试验结果表明：热处理可改变锰硼白口铸铁碳化物的形态与分布，其效果与热处理工艺参数及碳化物形态等密切有关。

By adding silicon, manganese, boron and rare earth elements to the alloy, the properties of the alloy was optimized.

在国产ZZnAl4Y合金的基础上添加硅，锰，硼，钛和稀土元素，优化合金性能。

The agricultural area pollution and the wind-borne dust in the bare farmland should be harnessed.

农业面源污染、裸露农田扬尘基本得到控制。

Experimental Studies on the Intercropping of Chinese Toon and Crops in Wind-borne Sandy Areas of the Plain

平原风沙区香椿与农作物间作效益的试验研究

You needn't have worried& you played the part of hostess as if to the manner born.

你事先根本不担心&你似乎是天生的女主人。

He was a gentleman to the manner born.

他是一个天生的君子。

S eth: Your soul was not born yesterday, but before the annals of time as you think of time.

赛斯：你的心灵并不是在昨天诞生的，而是在你们所有的计量时间的开始之前。

Don't worry! I was not born yesterday.

别担心！我又不是三岁小孩儿。

High precision automatic microfeed universal boring head

高精度自动微进万能镗头

Design and Application of a Auto-feed Boring Head Using in Machining End Surface of Thin-wall Big Case

新型自动进给式镗头的设计与应用

The design combination boring head is for enhances the box body the processing precision and the efficiency.

其中设计专用夹具和组合镗头的应用进一步提高箱体的加工精度和效率。