查询词典 Pm

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。

Mr Netanyahu's bid for PM was boosted on Thursday when he won the backing of the far-right Yisrael Beiteinu party.

内塔尼亚胡先生对首相的争夺在星期四被推进当他赢得了极右派的以色列我们的家园党的支持的时候。

From the angle that integrates the inner control IC with the process management PM , the paper tries to explain how to improve the inner control of an enterprise by enhancing the process management , and make the enterprise use its resource felicitously , efficiently and safely to meet its goal .

本文尝试从流程管理和内部控制相结合的角度阐述如何通过加强流程管理来促进企业内部控制，来帮助企业恰当，有效，安全的配置资源，从而更好地达成企业的目标。

It was about 8 pm , so we can not see the exactly view. Loomly, I can feel the environment is very nice as well. About 10 minutes, the small ferry stopped at the small pier.

由于已经是晚上8点了，由此看不到岸边的景色，隐约中，还是感觉很美丽的。10分钟过后，小船停在了一个小的码头上。

Fiedler is out of Hertha's round 18 Bundesliga game against VfL Wolfsburg on Saturday 27th (kick off 3.30 pm).

菲德勒将缺席27日周六德甲第18轮赫塔对阵沃尔夫斯堡的比赛（下午3：30开球）。

3I need filly dollars, but Pm ten dollars short.

我需要五十美元，但还差十美元。

By 7:30 PM, my legs were shaved, my hair blown dry, and a sexy new negligee was hanging on the bedroom door. The living room had been lit flatteringly and the ubiquitous kids' toys replaced by pillows tossed strategically in front of the fireplace.

到晚上7点半，我已经刮净了腿毛，吹好了头发，并且在卧室的门后挂上一件新的性感的长睡衣，起居室在柔和的光线下显得浪漫温情，孩子们在壁炉前扔得到处都是的玩具已被特地摆放的枕头取而代之。

00 Pm on the same day, airport那拉提achieve the maximum amount of rainfall, the entire ramp lake sparkling like microwave; terminal red metal roof to be rain flap "咚咚" sound; airfield soil surface into a rainwater catchment area Article numerous small streams, flows continuously Floodway.

当日下午17时，那拉提机场降雨达到最大量，整个机坪像微波粼粼的湖面；航站楼红色的铁皮屋顶被雨点拍打地"咚咚"作响；飞行区土面区内雨水汇集成无数条细流，源源不断地流向排洪渠。

Every year, last Sunday in September, Folsom Street in San Francisco would be blocked off from 11:00 AM to 6:00 PM for the Folsom Street Fair.

每年九月最后一个周日，旧金山佛森街从早上十点到下午六点将拦起来举办「佛森街庆」。

The black ant leaves the nest to forage foods with rhythm. In the winter, the period from 10:00 am to 4:00 pm is its best time for foraging; In the spring, there are two rush hours for the ant foraging, in the morning from 8 o'clock to 10 o'clock and at afternoon from 16 o'clock to 19 o'clock.

黑蚂蚁出巢摄食时间有一定的规律性，冬季，黑蚂蚁每天摄食的高峰时间为上午10点以后到下午4点以前；春季，黑蚂蚁每天出巢摄食一般有两个高峰时间，即上午8~10时和下午4~7时。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。