钨酸

The method of series rate is used to study the linear growth order of ammonium paratungstate crystal.

将结晶成核期后晶体的生长阶段作为线生长速率测定的时间范围，采用"串联速率法"研究了仲钨酸铵的晶体线生长级数。

Growth layer existing in PbWO 4 crystals were investigated with optical microscope and electron microprobe and were recognized to be platinum particles.

利用光学显微镜和电子探针研究了存在于钨酸铅晶体中的生长层，确定这些生长层的成分为固体的铂金颗粒。

The result makes clear, as the addition of sedimentary curing time, structure of crystal of tungsten acerbity lead is monocline brilliant from all directions brilliant change model, appearance evolves into structure of attrib wattle shape from the tower shape structure of cascade.

结果表明，随着沉淀物熟化时间的增加，钨酸铅晶体结构从四方晶型转变为单斜晶型，外貌从层叠的塔状结构演变成板条状结构。

Our calcium tungstate screens use high quality phosphor processing for exceptional luminescence with an optimum combination of speed and resolution along with minimum mottle.

我们的钨酸钙增光屏使用高质量的磷，采用荧光处理，配合素和分辨率的最佳组合以及最低的斑点率。

The effects of the A-1 concentration, the sodium tungstate concentration, the molar ratio of H2O2 to pinene, and the reaction temperature are investigated.

考察了季铵盐(A-1)的浓度、钨酸钠浓度、H2O2与蒎烯的量比、反应温度对环氧化反应的影响。

Three new-type charge-transfer salts were synthesized based on the reaction of three kinds of basic dye (crystal violet, safranine T, methylene blue BB, respectively) and tungstophosphoric acid of Keggin structure.

报道了用Keggin结构的磷钨酸与碱性染料结晶紫、碱性藏红T和碱性湖兰BB反应形成的3种新型电荷转移盐。

Lead tungstate is the crystal approved as the new generation scintillator in CMS experi...

钨酸铅晶体是欧洲核子研究中心确定为CMS工程所用的探测器晶体材料。

Methane ; Oxidative coupling ; Sodium tungstate ; Manganese oxide ; Supported catalyst ; Redox mechanism

甲烷；氧化偶联；钨酸钠；氧化锰；负载型催化剂；氧化还原机理

The anode catalyst for direct methanol fuel cell is Pt-W-Sn/C, and it is prepared through dispersing carbon black in distilled water, adding H2PtCl6, tungstate and stannate, stirring to make the metal salt and H2PtCl6 adsorbed fully; dropping reductant to reduce and deposite until complete reaction; washing with distilled water, filtering and drying to obtain black C carried sanitary Pt-W-Sn catalyst. The catalyst has excellent methanol catalyzing activity and low cost, and its use can lower the cost of direct methanol fuel cell greatly and raise the performance/cost ratio of the cell.

一种直接甲醇燃料电池阳极催化剂是Pt-W-Sn/C；其制备方法是将碳黑分散在蒸馏水中，然后加入H2PtCl6、钨酸盐和锡盐，搅拌使得金属盐与H2PtCl6被充分吸附；逐滴加入还原剂使之还原沉积，待反应完全后，用蒸馏水洗涤，过滤，然后于干燥箱中干燥，便得到黑色的C负载Pt-W-Sn三元催化剂；该催化剂具有很好的甲醇催化活性，价格低廉，可以大大降低直接甲醇燃料电池的成本，提高电池的性能价格比和市场竞争能力。

Thermoluminescence and optically stimulated luminescence of PbWO_4 crystal doped with Y 3+ is investigated.

实验测试了掺钇的钨酸铅(PbWO4 )晶体的热释光和光释光。

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。