查询词典 copper coin

The results show that there are little difference of CO sensitivity between precipitation transformation method and sol-gel method, the sensitivity of copper oxide loading on zirconium oxide or cerium oxide is better than that of loading on alumina or silicon dioxide, the optimal calcinations temperature is 500 Celsius degree and the optimal copper content loading on cerium oxide is twelve percent.

实验结果表明，材料的制备方法对气敏性质的影响不大；锆铈基氧化物的气敏性质较高，而Al2O3，SiO2作载体时效果要差一些；焙烧温度在500℃时对CO具有最好的灵敏度；当负载在氧化铈载体上的氧化铜含量为12%时，对CO的气敏性质最高。

Of total copper in the ore, and the main copper sulfide mineral are chalcocite and covellite.

查明了矿石中铜的赋存状态及主要的脉石成分。

We want to interpret the sensing mechanism of copper oxide by the point of view of catalytic chemisorption theory; the cause of sensitivity of copper oxide was the CO chemisorption on the oxygen active regions.

并从催化理论上对氧化铜的气敏机理进行解释，认为CO在氧化铜表面的化学吸附是氧化铜气敏材料的气敏性质产生的原因。

Copper deficiency results in chlorosis, suggesting that copper may be involved in the synthesis of chlorophyll.

缺少铜可以导致植株萎黄，这说明铜有可能与叶绿素的合成有关。

Other accessories: leather cover an American Desk, deer skin head 13mm card 20, a device under repair, a bag of glue, a brush on the 10th, Choctaw powder 12, a cross of copper , an alpine word, copper hook 2 silver

其它附件：仿皮美式台罩1个、鹿牌13mm皮头20粒，修杆器1个，胶水一袋，10号刷子1把、巧克粉12粒，铜十字1个，高山字1个，铜钩2套

A hydrous copper silicate, Chrysocolla is a minor copper ore.

硅孔雀石是一种水合铜硅酸盐，一种极其罕见的铜矿石。

Our factory specializes in manufacturing all kinds of springs: compression spring, tension spring, torsion spring, circlip, special-shaped spring; a variety of car parts: Copper, Iron and steel aluminum car parts ; a variety of Chinese Division: Copper, Iron and Stainless Steel Flat Washers, Spring Washers, both inside and outside China Division, E-ring and other hardware.

本厂专业制造各种弹簧：压簧、拉簧、扭簧、卡簧、异型弹簧；各种车件：铜铁不锈钢铝车件；各种华司：铜铁不锈钢平华司、弹簧华司、内外华司、E型扣等五金。

Suitable metals and alloys include aluminium, bronze, beryllium, chromium, columbium, constantan, copper and copper alloys, gold, nickel and nickel alloys, lead, magnesium, molybdenum, niobium, platinum, silver, stainless steel, mild steel, tin, titanium, tungsten, vanadium, zinc and zirconium.

适用于金属和合金包括铝，铜，铍，铬，铌，镍铜合金，铜及铜合金，金，镍和镍合金，铅，镁，钼，铌，铂，银，不锈钢，低碳钢，锡，钛，钨，钒，锌，锆。

Conductance of copper graphite materials with different copper contents was studied in detail.

随着科技的飞速发展，电机性能不断提高，对电刷的要求也愈加苛刻。

The conductibility of graphite powder can be improved by plating copper on it, and its magnetic conductibility can also be improved by further plating nickel on the copper coating.

讨论了化学镀铜工艺条件，开发出一种导电导磁性能好、密度小和价格低的镀镍石墨粉类导电填料

Methods Clinical data of 3 cases of bile duct injury during laparoscopic cholecystectomy were analyzed retrospectively.

回顾总结3例LC术中胆管损伤的临床资料，分析3例胆管损伤的原因及对策。

These techniques are applied to the gobang.

本文将这些技术用于五子棋中。