金属物质

The complex decomposes activated substances with methylene, can promote formation the chemical bond between fluorine rubber and silane coupling agent; meanwhile, these activated substances can produce many kinds of amino resin containing a large number of activated function in the course of vulcanization, and improves adhesion forces with metal.

络合物分解生成具有活性亚甲基的物质，促进氟橡胶与硅烷偶联剂生成化学键，同时，这些活性物质在硫化过程中生成多种具有氮亚甲基结构特征的、含有大量活性基的氨基树脂，提高了与金属的粘接力。

The complex decomposes activated substances with methylene, can promote formation the chemicalbond between fluorine rubber and silane coupling agent; meanwhile, these activated substances canproduce many kinds of amino resin containing a large number of activated function in thecourse of vulcanization, and improves adhesion forces with metal.

络合物分解生成具有活性亚甲基的物质，促进氟橡胶与硅烷偶联剂生成化学键，同时，这些活性物质在硫化过程中生成多种具有氮亚甲基结构特征的、含有大量活性基的氨基树脂，提高了与金属的粘接力。

One kind of composite with redox activity was prepared by ammonolysis of 3,4,9,10-perylenetetracarboxylic dianhydride,o-phenylenediamine and variable valence transition metal ions of Co~(2+).

利用苝四甲酸酐与1，3-丙二胺的胺解产物、邻苯二胺、变价过渡金属离子Co~(2+)制备了新型具有电化学活性的物质，该物质电子传输性能好，电极反应可逆，可以作为电化学活性探针使用，而且因其含有很多氨基，便于进一步结合纳米金。

There are other metal arsenates, such as those of Fe,Zn,Cu, and Pb, which are less soluble and more stable in the neutral pH region than calcium arsenates or ferric arsenate, but these have not been seriously considered as disposal forms.

还有其他金属砷酸盐，例如那些 Fe、 Zn、 Cu和 Pb，比起砷酸钙或者砷酸铁来，这些物质在中性的 pH 值范围内很少是可溶并且更稳定的，但是这些物质没被以处理的形式认真慎重地考虑过。

The Pd-Cu/C catalysts were shown to have the face centered cubic crystal structure. This could indicate that the addition of Cu shortened the Pd-Pd distances in the crystal lattice, and therefore –HO(subscript 2ads) and O-O could be better adsorbed on the surface of the catalyst. When NaBH4 was used as the reducing agent, and the atomic ratio of Pd to Cu was 3:1, the resulting catalysts had an average particle size of 3. 4nm and showed the best catalytic performance. The electrochemical active surface are a of Pd3Cu/C was 38.9m^2/gPd and the oxidation reduction reaction activity of the Pd3Cu/C catalyst was much higher than that of the Pd/C catalyst. The electrochemical activity of the Pd3Cu/C catalyst was comparable to that of a commercial Pt/C catalyst.

结果表明：催化剂中Pd与Cu的物质的量之比与预设值相近，Pd和Cu基本被全部还原；Pd-Cu/C催化剂为面心立方结构，元素铜的加入使催化剂的Pd-Pd间距缩小，从而HO(下标 2 ads)和OO键能更好地吸附在催化剂金属表面；当采用NaBH4为还原剂，Pd与Cu物质的量比为3：1时，催化剂(Pd3Cu/C)的平均粒径为3.4 nm，催化剂的催化性能最好，电化学活性表面积EAS达到38.9平方公尺/gPd，电化学性能较Pd/C催化剂有很大提高，接近Pt/C商用催化剂。

Utilizing the intense catalysis of metal ions to peroxide oxygenating rhodanine, a catalytic fluorescence method of using the new type rhodanine to determine trace iron, cobalt, copper, tin and antimony was established.

利用痕量金属离子对过氧化氢氧化若丹宁具有强烈催化作用的性质，建立了一系列利用新型若丹宁物质催化荧光法测定痕量铁、钴、铜、锡和锑的新方法；较系统研究了系列若丹宁衍生物在催化荧光法测定金属离子的各影响因素，确定了反应的最佳条件，计算了动力学参数。

This, it would be necessary only to make a little ball of earth that can be accurately weighed ; then we could easily calculate how many times the earth is larger than this little ball; and by so doing, we might tell, at one's fingerends, that — if we suppose the little earth-ball to weigh a hundred-weight — the whole globe, being so many times larger, must weigh so many hundred- weights.

可是，这样的做法极可能误导我们。因为一切取决于制造小球的物质。如果用酥松的泥土制造小球，它的重量就小；如果泥土中掺杂石头，它的重量就大一些；如果掺杂金属，取决于掺杂金属的种类，它的重量将更大。

In the process of reaction of the catalyst, the metal contained in it is introduced in a molecular state into the substance catalyzed (nitro-cellulose).

这种新催化剂是将起催化作用的金属以分子状态引进到被催化的物质之中——硝棉铅，它是金属高聚物的一种。

The research has suggested:(1) The alkaline metal of load and absorbent A and having active materials and absorbent B twin towers of the catalyst to contact and is used of the metal oxide of transition, having better results to get rid of various kinds of sulphides, such as hydrogen, sulphur alcohol,etc. The sulphur holds can be more than 14%.

研究认为：(1)负载碱性金属及过渡金属氧化物的吸附剂A和带有活性物质和催化剂的吸附剂B双塔串联使用，对脱除硫化氢、硫醇等硫化物有较好效果，硫容可达14%以上。

Any of a large class of sour-tasting substances whose aqueous solutions are capable of turning blue litmus indicators red, of reacting with and dissolving certain metals to form salts, and of reacting with bases or alkalis to form salts.

酸任何一类酸性的物质，它的水溶液可以使蓝色石蕊试纸变红，与金属反应或溶解金属时可形成盐，和碱反应亦可形成盐

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。