粉末

By adding the additive into the non-self-fluxing copper powdered alloy, as a result, the powder shows self-fluxing and improves the oxygen-acetylene flame spraying.

在非自熔性铜合金粉末中加入特制的添加剂，使粉末具有自熔性，并改善了喷焊的工艺性及感应加热熔敷结合的工艺性。

The degree of the complete reaction is affected by spray powder size, oxygen-acetylene flame power, spray distance and the composition of spray powder.

喷涂粉末粒度、氧乙炔火焰功率、喷涂距离以及喷涂粉末的原料配比均会影响Ti-C间的反应程度，从而影响Fe-Ti-C体系的反应动力学。

The influence of temperature and time on the purty and size of ZrB〓 powder was studied. Residual stress was analysed theoretically in the condition of densely distribution of second phase particles, and toughening mechanism was explored for particulate composite.

首次从理论和实验论证了还原法制备ZrB〓粉末的固相反应中存在硼热反应，研究了反应温度和保温时间对粉末纯度和粒度的影响。

AgNO3 and PdCl2 solutions are used to activate the graphite power, and electroless copper and nickel platings are performed on the surface of the graphite powder.

利用AgNO3和PdCl2溶液对石墨粉末进行活化，在石墨粉表面化学镀铜和化学镀镍；石墨粉末镀铜可以增强其导电性，铜表面再镀镍可以提高其导磁性能。

The process of introducing a static electrical charge on powder particles by passing the powder through an electrical field generated by high voltage.

粉末粒子通过高电压产生的电场而使粉末粒子带上电荷的过程。

The effects of such parameters as temperature, pH, feeding rate,concentration, [NH_3]_T/_T molar ratio, surfactants and agitation, on the morphology and size of the particles, were studied and conclusions obtained are as follows:(1) The morphology and size of the particles are mainly decided by the species of nickel oxalates present.(2) Speeding up dissolution-recrystallization process benefits the preparation of the particles of being composed of a single species with uniform morphology and high aspect ratio.(3) The variations of nucleation and growth supersaturation under different conditions have definite effects on the morphology and size of the particles.(4) Adding PVP25 at a proper amount is beneficial to the preparation of fibrous nickel oxalate particles with high aspect ratio. 3 The formation mechanism as well as the morphology and size control of fibrous cobalt oxalate particlesThe cobalt oxalate particles with fibre morphology were prepared using CoCl_2 solution and mixed(NH_4)_2C_2O_4, NH_3·H_2O solution by a double jet process.

研究了温度、pH值、加料速度、浓度、[NH_3]_T/_T摩尔比、表面活性剂及其添加量、搅拌等对颗粒形貌与粒度的影响，主要结论为：(1)草酸镍化合物种类是决定颗粒形貌与粒度的最主要因素；(2)提高陈化中溶解—再结晶速度，有利于得到物相单一，形貌规整，轴向比大的粉末；(3)不同条件下，颗粒形核与生长过饱和度改变，也会对粉末形貌与粒度产生一定影响；(4)适量添加PVP25有利于大轴向比纤维状草酸镍的制备。3纤维状草酸钴的形成机理及其形貌与粒度控制采用CoCl_2溶液与(NH_4)_2C_2O_4和NH_3·H_2O混合溶液并流加料合成的方法，研究了纤维状草酸钴的制备。

The results showed that the wheat-straw powder had little reinforcing effect on NR,but had good filling effect;when the wheat-straw powder was modified by sodium hydroxide solution,silane coupling agent KH-550 or its solution,the physical properties of wheat-straw powder/NR composite were improved;the silane coupling agent KH-550 solution possessed better modifying effect.

结果表明，小麦秸秆粉末对NR无明显补强作用，但具有良好的填充作用；采用氢氧化钠溶液、硅烷偶联剂KH-550或其水溶液对小麦秸秆粉末进行表面处理，均可改善复合材料的物理性能，其中硅烷偶联剂KH-550水溶液的效果较好。

Which use laser welding with a powder, a kind of heat treatment, and do not use another kind of heat treatment; plasma surfacing using two different surfacing powder, respectively, and Ni-Fe-based, heat after heat treatment.

其中激光采用同一种堆焊粉末，一种进行热处理，另一种不采用热处理；等离子堆焊采用两种不同的堆焊粉末，分别为Ni基和Fe基，都进行热后热处理。

The influences of the filler metal powder on the intensity threshold, weld formation and process stability have been studied during high power CO2 laser welding of aluminum alloy through the comparison between welding with and without metal powder.

通过采用和不采用填充合金粉末的比较试验，研究了填充合金粉末对铝合金高功率CO2激光焊接功率阈值、焊缝成形和焊接过程稳定性的影响。

Zhuzhou jiangwu Boda Hard-facing materials Co.,Ltd mainly froducts for Thermal Spray Powder, Refractory Metal Powder, Refractory Metal Carbide Powder,Welding Alloys, and other new materials.

株洲江钨博大硬面材料有限公司主要产品为热喷涂粉末、难熔金属粉末、难熔金属碳化物、焊接合金等新型材料，拥有自营进出口权。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐