Conclusions: The 10 % carbamide peroxide can provide an effective way to discolored nonvital tooth.

To add a little carbamide will lead to accelerating phosphor-acidification and enhancing retention in phosphor-acidification.

磷酸化反应时加入少量尿素,可以起到加速磷酸化反应和增加留着率的作用.

They say hydrogen peroxid peroxide or carbamide peroxide may also help.

同时,过氧化氢或者过氧化脲也可以起到辅助的作用.

They say hydrogen peroxide or carbamide peroxide may also help.

他们还认为过氧化氢和过氧尿素也有所帮助.

The Study of Wheat's Physiological and Ecological Effects with 2 , 4-D , Carbamide and MET.

4-D, 氮肥, 多效唑对小麦生理生态的影响.

They say peroxide or carbamide peroxide may also help.

他们说过氧化氢和过氧化脲也可能对此会有帮助.

The various effects on synthesis of N-methyl carbamyl chloride were studied. Temperature is most important one.

介绍了影响N - 甲氨基甲酰氯合成的各种因素,其温度是主要影响因素.

The control effect of DDVP . carbaryl and cypermethrin smoke agents were 95.85 % 31.51 % and 97.66 % respectively.

西维因烟剂防治效果为 31.51%,氯氰菊酯烟剂防治效果为97.68%.

For the materials with high hardness, such as cemented carbide, glass , jadeware, etc.

适用于各种高硬材料的磨削及研磨加工, 如硬质合金 、 玻璃、玛瑙 、 珩磨汽缸套等.

At the same time sales agent with tungsten carbide alloy PCB-drilling.

同时代理销售PCB用 碳化钨合金微钻.

CarbonControl in MIM Process of Nonmagnetic Fine cemented Carbide was studied.

研究了细晶无磁硬质合金金属注射成形工艺中碳含量的控制.

The unidirectional short silicon carbide fibers reinforced-glass-ceramic matrix composite specimens were fabricated.

制备了单向短碳化硅纤维增强玻璃陶瓷的复合材料.

A trademark used for an abrasive of silicon carbide crystals.

(商标)由金刚砂晶体构成的研磨剂.

The bullet is made of Wolfram Carbide , strong and durable.

扩管头为碳化钨材质, 永不磨损.

Formation mechanism of sintering cemented carbide pockmarks is studied.

研究了硬质合金烧结麻面的形成机理.

This important carbide precipitates both inter and intragranularly.

这种重要的碳化物向晶体内和晶体间沉淀.

Cement concrete pavement diamond saw blade, carbide saw blades.

水泥混凝土路面的金刚石锯片, 硬质合金锯片.

A carbide former if there is sufficient Carbon in the steel also.

如果钢中有足够的碳则碳化物就形成了.

The results show that the hardness has relation to vanadium carbides boundary.

结果表明,熔合区的硬度与该处碳化物的析出数量有关.

In this paper, some aspects of turning die grade carbides with domesticPCD tools are studied experimentally.

本文对用国产复合金刚石刀具车削硬质合金材料作了一些试验研究.

This paper deals with the granular carbides formation from hot deformation in high chromiumsteel.

研究了高速纸机中具有闷头的空心铸钢辊结构的塑性极限和参数设计问题.