查询词典 platinum process

Soon enough, platinum was used to make sugar bowls and coffeepots - and the early 19th century saw the birth of platinum jewelry in the form of decorative chains, shirt studs, and cuff links.

很快，铂金被用于制造糖和咖啡壶碗-和19世纪初看到了铂金饰品的装饰链，衬衫钉形式的诞生，和链扣。

Lanthanides belong to the sixth cycle of the periodic table Ⅲ B family, are all solid metal, they are La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, holmium, erbium, thulium, ytterbium, and lutetium were 15 kinds of metals and their periphery are two layers of electronic 5d16s2, while the peripheral third layer f orbital but never zero to 14, so the external electronic structure of 4f0-145d16s2, and therefore these elements in oxidation number are to 3, very close chemical properties, extraction, when it is difficult to separate them they are mostly multi-element mineral mix, more difficult to increase refining, and their atomic number of 57-71, one by one to increase the number of protons the nucleus, and thus extranuclear electron of gravity is also growing, so that atomic radius decreases with increasing atomic number Z, which makes lanthanides contraction, ionic radius is also reduced, which also makes Zr, Hf, Nb and Ta, Mo and W, the atom and ionic radius very close to each other they also determine a similar nature, resulting in difficult separation, also the tribe Ⅷ of the fifth cycle, ruthenium, rhodium, palladium, and the sixth cycle, osmium, iridium, platinum is very similar in nature, thus The six elements, said platinum group elements.

镧系元素属于周期表第六周期中ⅢB族，全部是固体金属，它们是镧、铈、镨、钕、钷、钐、铕、钆、铽、镝、钬、铒、铥、镱和镥共十五种金属元素，它们的外围两层的电子均是5d16s2，而外围第三层的f轨道电子却从零增加到14个，所以外围电子结构为4f0－145d16s2，而使这些元素氧化数均为＋3，化学性质极为接近，提炼时很难分开，它们的矿石又大多是多种元素混在一起的，更增加提纯难度，它们的原子序数为57－71，核内质子数逐个增加，因而对核外电子引力也不断增强，使原子半径随原子序数Z增加而减小，这就使镧系元素收缩、离子半径也缩小，这也使得Zr和Hf，Nb和Ta、Mo和W等原子和离子半径都很接近、也决定了它们彼此性质类似，以致难以分离、也使第Ⅷ族中第五周期的钌、铑、钯和第六周期的锇、铱、铂在性质上极为相似，因而称这六个元素为铂系元素。

Popular platinum necklaces are available in classic link and chain styles or more lacy Victorian pieces of platinum filigree.

流行白金项链，可在传统的联系，连锁风格或以上的铂维多利亚花边件花丝。

A heavy brittle metallic element of the platinum group; used in alloys; occurs in natural alloys with platinum or osmium.

一种重而脆的铂属金属元素，用于制合金，与铂或锇形成天然合金。

The problems 'considered include the correction of gas thermometer readings, the specification of: the platinum resistance thermometer and of the platinum thermocouple .

本文指出，在以绝对温标为标准以后，寻求冰点的绝对温度与对气体温度计的改正两种工作统一起来了。

It is evident, in view of the corrosion of the positive platinum terminal of the electrolysis apparatus, that nascent fluorine rapidly attacks platinum at a temperature of -23°.

这是显而易见的，在该仪器的电解腐蚀的积极铂终端的看法，即在新生氟迅速袭击了-23 °温度白金。

Like other scamware, Registry Defender Platinum pops up fake system alerts to try and scare you into buying Registry Defender Platinum.

像其他scamware ，书记官处后卫白金弹出假冒的系统提醒，试图吓唬你购买注册后卫白金。

Following on from the amazing success of Sound Blaster Audigy 2 and Audigy 2 Platinum, Creative look to target the more demanding audio user with Sound Blaster Audigy 2 Platinum eX.

在Sound Blaster Audigy 2以及Audigy 2 Platinum大获成功后，创新公司针对要求更为苛刻的专业用户群体推出 Sound Blaster Audigy 2 Platinum eX 。

This study is to investigate the high temperature hot corrosion behavior of aluminide coating and platinum-aluminide coating on Ni-base superalloy MAR-M247. On the platinum-aluminide, aluminide and the base metal, respectively, by the salt spraying method.

本文研究MAR-M247镍基超合金表面经铝化涂层或白金铝化涂层处理后，其热腐蚀效应对腐蚀速率与显微组织之影响，并藉试片质量增加量的变化评估抗热腐蚀的能力。

As well using flameless atomic absorption spectophotometer toanalyse the amount of platinum binding to DNA,we can fand that after 1hour at 37℃ the amount of platinum binding to DNA for BGC-823 acted byCDDP 20ug/ml in hypotonic solution was 30.1±6.2ng/mg·DNA,whilethe isotonic groups were 6.4±1.5ng/mg·DNA.

采用非火焰原子吸收光谱法检测DNA结合铂含量发现，BGC-823经20μg／ml CDDP，37℃作用1小时，低渗给药组DNA结合铂含量为30.1±6.2ng／mg·DNA，等渗给药组DNA结合铂含量为6.4±1.5ng／mg·DNA，两者差异显著(P＜0.05)，该结果表明低渗溶液能显著增强CDDP与其作用靶点—DNA的交联。

The father that if work,mad father, love annoys, disposition is too indrawn the be short ofing that the father of Mu Ne, resign oneself to adversity causes father easily to love is broken; Communicate time effectively between father and son, Mu Zizhi to be less than a hour on average to wait a moment every week, it is the cause that causes the child to become addiction.

如工作狂的父亲、爱愤怒的父亲、性格过于内向木讷、逆来顺受的父亲都易造成父爱的缺失；父子、母子之间的有效沟通时间每周平均小于一小时等等，都是造成孩子成瘾的原因。

These are vandal proof and they come with a locking mechanism.

这是野蛮的证据，他们来到了锁机制。