查询词典 specific gravity

Effects of gravity on pressure distribution and extreme value changed with different postures and IODP.

对正、倒直立位，压力均为二维轴对称分布，其重力影响强度约为水平卧位的2倍以上。

The structure of the boron gravity-injection system which is compared with other external similar systems is presented. Its extrusive character in its structure design shows that it plays an important role in the development process of passive driven system.

介绍了重力注硼系统的结构，并与国外设计进行了对比分析，指出了重力注硼系统在结构设计上的突出优势及在非能动系统发展过程中的重要地位。

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。

The influence of with or without longitudinal joint, with or without initial opening, with or without filling in the joints and different friction factor in the joint face and so on are studied on the seismic response of Fengman Dam. Thus the conclusions for gravity dams with longitudinal joints is drawn.

对于丰满重力坝，本文考虑了有、无纵缝，纵缝有、无宽度，纵缝有、无填充物及缝面的不同摩擦系数等情况，进行了静动组合的地震反应分析，对存在纵缝的重力坝的抗震特性得出了一系列规律性的认识。

I don't want to fall another moment into your gravity.

我不想再被你吸引。我在这里，站在高处

In this way the runner is free to fall under gravity between mod plates.

然后在重力的作用下，从模板之间自然下落。

Descend in free fall under the influence of gravity.

在重力的作用下自由落体。

Faller, who devised an experiment that uses gravity field of a one half metric ton source mass to perturb the trajectory of a free-falling mass.

Faller曾作过一个尝试，他们设计了一个实验，用半顿的重物影响物体自由落体的轨迹。

"The skeleton of Tiktaalik indicates that it could support its body under the force of gravity whether in very shallow water or on land," said Farish Jenkins, professor of organismic and evolutionary biology at Harvard University and co-author of the papers.

"Tiktaalik的骨骼表明它可能具有支持其体构在重力之下的力量，无论在浅水区或陆地"，Farish Jenkins说，哈佛大学 organismic和进化生物学教授论文的共同执笔者。

We demonstrate that the surface gravity of a Kerr-Newman black hole can not be reduced to zero in a finite sequence of physical interactions.

结果表明，与前人计算标量场的情况一样，对于Kerr-Newman黑洞要得到不发散的结果，也需要选取径向和角向两个截断因子ε和δ。

I was up all night because I was in pain, she said.

我整夜，因为我在疼痛，她说。

A crow caws /craoks.

乌鸦叫。 51-论文网