黄铜的

Alpha brass es contain less than 40% zinc; beta brass es (40-45% zinc) are less ductile than alpha brass es but stronger.

黄铜的含锌量低于40%，β黄铜含锌较多(40～45%)可锻性较α黄铜差，但强度大。

The processing abilities, structures and corrosion properties of the ceric aluminum brass and the arsenical aluminum brass were studied by means of metallographic analysis, microhardness measurement, mass loss measurement, electrochemical testing and scanning electron microscopy.

采用金相组织分析、显微硬度分析、质量损失分析、电化学测试和扫描电镜等手段研究铈铝黄铜和砷铝黄铜的加工性能、组织结构和耐蚀性能。

A brassbound campaign chest; the heavy brassbound door.

包着黄铜的屉柜；包着黄铜的沉重的门。

The malleability of brass depends on its zinc content; brasses with more than 45% zinc are not workable.

黄铜的可锻性取决于含锌量：含锌量高于45%的黄铜不能加工。

Alpha brasses contain less than 40% zinc ; beta brasses (40-45% zinc ) are less ductile than alpha brasses but stronger.

黄铜的含锌量低于40%，β黄铜含锌较多(40～45%)可锻性较α黄铜差，但强度大。

Other items that made up Mr Guest's extensive collection include a brass plate for a steam engine a cast iron and copper steam locomotive chimney pot restaurant car cutlery brass cap badges signalmen's uniforms a station master's oak desk a brass whistle brass locks for carriage doors ticket collectors' punches timetables and station signage including one for the gents.

盖斯特先生的大量珍藏中，还有另一些物品，包括一块蒸汽机上的黄酮片、蒸汽机车上一块铸铁的镀铜烟囱管、餐车上的餐具、黄铜的帽徽、铁路通信人员的制服、车站站长的橡木桌子、一个黄铜的哨子、车厢门上的黄铜锁、检票员的打孔机、火车时刻表和包括一个男厕所标志在内的一组车站标牌。

It has long been known that the poor corrosion resistance of brass in certain environment is due to the phenomenon of dezincification.

采用显微组织分析和脱锌腐蚀实验方法，研究了不同铋含量对黄铜的微观组织以及黄铜脱锌腐蚀性能的影响。

The malleability of brass depends on its zinc content; brass es with more than 45% zinc are not workable.

黄铜的可锻性取决于含锌量：含锌量高于45%的黄铜不能加工。

The results showed that stibium, mainly as intermetallics, distributed in β phase as well as at the interface of α/β phase.

结果表明，锑主要以金属间化合物存在于β相以及α和β相的相界处；主要力学性能与HPb59-1铅黄铜相当，锑黄铜的抗拉强度为461.72Mpa，屈服强度为213.3MPa，伸长率为15.67％。

The results show that Bi and Sb are mainly distributed on grains and grainboundaries, and Bi on grainboundaries there are mainly simple substance Bi particles, Sb in grains are intermetallics containing stibium. The tensile strength, yield strength, elongation and variation of area of halfhard brass containing bismuth and stibium are 478.9 MPa, 295 MPa, 15.1% and 29.3% respectively. Corresponding to HPb59-1, the cutting property of brass containing bismuth and stibium is excellent. The brass containing bismuth and stibium shows excellent dezincification corrosion resistance, and the depth is 323 μm.

结果表明：添加的Bi和Sb主要以单质或化合物方式存在于无铅黄铜的相内和相界处，Bi以单质颗粒存在于相界处，Sb以化合物形式存在于相内，这对提高合金切削性能有利；添加Bi和Sb黄铜的抗拉强度为478.9 MPa，伸长率为15.1%，断面收缩率为29.3%，屈服强度大约为295 MPa；添加Bi和Sb黄铜的切削性能比HPb59-1铅黄铜的优，合金的脱锌腐蚀性能良好，脱锌层厚度约为323 μm。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。