英汉例句

• objective try to find a method to determine the sulfate radicals in chromium plating bath with high iron ions.

  目的準确测定高含铁量镀铬液中硫酸根的含量。

• the airtight function of chromium plating for piston rod is a knotty technical problem for aircraft factories.

  活塞桿镀铬层的气密性问题，是航空工厂长期存在的一个老大难问题。

• laser quenched groove surface has high wear resistance, and its wear resistance is higher than that of groove by using high frequency quenching and chromium plating method.

  激光淬火的环槽表面具有良好的耐磨性，比原高频淬火和镀铬工艺处理的耐磨性有较大提高。

• chromium plating in low chromic anhydride-containing bath at low temperature has been widely used for years for its peculiar advantages.

  低温、低浓度镀铬具有其独特的优点，已推广使用多年。

• trivalent chromium plating can be divided into chloride and sulfate systems.

  三价铬电镀分为氯化物体系和硫酸盐体系。

• it's urgent to develop the technique of trivalent chromium plating because of the heavy pollution of hexavalent chromium plating.

  六价铬电镀工艺存在严重的环境污染问题，利用三价铬镀铬取而代之已经迫在眉睫。

• quality control of water, removal of impurities and other troubleshooting cases in rare earth chromium plating are described.

  叙述稀土镀铬液中水质的控制、杂质的去除，以及其它故障的排除方法。

• the decorative and hard functional trivalent chromium plating patents and papers abroad are reviewed.

  综述了国外三价铬装饰性电镀的专利及近几年三价铬功能性镀厚铬研究的动态。

• self-designed centrifugal high-speed chromium plating device was adopted to raise deposition rate for inner surface of cylindric works.

  为提高圆筒状工件内壁电镀铬的沉积速度，采用自行研制的离心高速电镀铬装置。

• no matter or plating chromium plating light hard chromium plating quality is higher, with light, wear-resisting, stability and other advantages, so has been widely used.

  无论镀光亮铬还是镀硬铬，镀层质量都比较高，具有光亮、耐磨、稳定等优点，所以一直得到广泛的应用。

• the invention relates to a piston ring and a surface spongy chromium plating technique thereof.

  一种活塞环及其表面松孔镀铬工艺。

• add in the milky white chromium plating chromium, called light wear double chrome plated. in the plane, shipping parts and guns lumen is widely applied.

  在乳白铬上加镀光亮耐磨铬，称为双层镀铬。在飞机、船舶零件以及枪炮内腔上得到广泛应用。

• the deduction is confirmed by establishing self locking conditions and determining the sliding friction coefficients between sand and chromium plating layer and between sand and nitrided surface.

  通过建立砂粒自锁条件及实测长石砂巖、石英砂巖与泵筒镀铬层或氮化层的滑动摩擦系数值，证实了对柱塞拉伤失效原因的推测是正确的。

• development of additives for hexavalent chromium plating was described. functions of the additives were classified, action mechanisms of the additives were investigated.

  介绍了近年来六价铬电镀添加剂的发展，根据添加剂的作用进行了分类，并探讨了其作用机理。

• meanwhile this paper also investigated the relationship between chromium plating and oxidation resistance of cast iron.

  同时还研究了试样表面镀铬与其抗氧化性之间的关系。

• chrome plating chromium plating for steel parts for yin polarity coating.

  铬镀层铬镀层对钢铁零件为阴极性镀层。

• a black chromium plating process was advanced.

  介绍了一种镀黑铬工艺。

• after feed-shoes surface were treated, the chromium plating layer possessed good wear resistance and excellent rust resistance, and the service life had increased.

  给棉板经过表面处理后，其表面可获得耐锈蚀和耐磨的优良镀铬层，从而极大地延长了给棉板的使用寿命。

• according to the special requirements of hard chromium plating for some products, the methods of increasing deposit adhesion are obtained through a series of experiments.

  根据某些产品对镀硬铬的特殊要求，经过一系列的试验，摸索出了一些有效地提高铬层附着力的方法。

• chromium plating on the laser-discrete-quenched steel substrate can induce a wide crack on the substrate along the direction of laser scanning.

  在离散处理的钢基体上镀铬可以在原始基体上形成一条与激光扫描方向相一致的宽裂纹。

• special treatment is recommended to activate beryllium copper surface before chromium plating. and special steps which differ from conventional chromium plating on steel parts are to be taken.

  在铍青铜合金上电镀铝，需在镀铝前作特殊的表面活化处理，镀铬时也有不同于钢铁件镀铬的操作方法。

• so the yield of hard chromium plating and the lifetime of plating pieces are increased.

  从而，大大地提高了镀硬铬工艺的合格率以及镀件的使用寿命。

• hexavalent chromium plating has weaknesses such as toxicity and environmental pollution.

  六价铬电镀具有毒性大、环境污染严重等缺点。