稀有

They harbor indigenously circular as well as linear plasmids, a useful source for developing genetic tool for studying of their unique physiology and metabolism.

在许多稀有放线菌发现了环型与线型质粒，由质粒发展起来的遗传操作系统可以为研究稀有放线菌的生理及代谢提供强有力的工具。

The application of research method for noble gas in crude oil to petroleum geology provides a new way for inferring natural gas and oil source,tectonic backgrounds,geothermal flow value and the effect of water injection in oilfield.

原油稀有气体研究拓宽了稀有气体在油气地质领域的应用范围，为判识气体来源、大地构造背景、大地热流、油源和油田注水效果提供了一种新的方法。

It is the rarest of rare things — more rare than snow in Saudi Arabia , more unlikely than finding a ham sandwich at the Wailing Wall, more unusual than water-skiing in the Sahara.

这是稀有而又珍贵的东西—比在沙特阿拉伯下雪还稀有，比在哭墙找到一个火腿三明治更加不可能，比在撒哈拉沙漠滑水更加不寻常。

The AMF spore average density was 24.88 per 20 g soil , the species richness was 1.94 per soil sample, the species diversity index was 2.56, and the species evenness was 0.65. Glomus, but they all were of prominent genus in the investigation area and Acaulospora, Scutellospora were of common genus while Entrophospora was rarely found. In the 13 species AM fungi, G.mosseae was of prominent species, and G.geosporum, G.intraradices, G.etunicatum were of common speices, while the others were of rarely species. There were 87.5% sand fixation plant were infected with arbuscular mycorrhizal fungi, the highest spore density, the strongest infection strength of the whole roots and the best species richness belonged to Chenopodiaceae while Polygonacea was the lowest.

四属AM真菌中，Glomus为优势属， Scutellospora 、Acaulospora为常见属，Entrophospora则为稀有属；十三种AM真菌中，G.mosseae、G.geosporum分别为优势种、最常见种，G.intraradices，G.etunicatum为常见种，其余均为稀有种；五科固沙植物中，87.5%的植物能被菌根侵染，其中藜科植物孢子密度最高，整个根系侵染强度最强，种的丰度最高，蓼科植物孢子密度、整个根系侵染强度、种的丰度则最低；禾本科植物不仅具有最好的丛枝结构，且具有相对高的亲和性，能与12种AM真菌共生。

Based on comparing four different kinds of ex-situ conservation for P.chinensis, and linked ex-situ conservation community with species re-introduction, the paper introduced three types of ex-situ community conservation including enhancing commun -ity for ex-situ conservation, restituting community for ex-situ conservation and introdu -cing community for ex-situ conservation.

在本文的最后部分通过叙述望天树在植物园中的不同保护方式的差异，将建立稀有、濒危植物迁地保护群落与植物的引种回归相联系，介绍了稀有、濒危植物迁地群落建设的三个类型：增强的迁地保护群落、重建的迁地保护群落和引种的迁地保护群落。

Besides, they will display eight far-between gems, such as: diameter of Arka red coral bead is 40mm, value 20.000.000RMB jade necklace, 91carats Columbia emerald and 70carats exiguous red chalcedony cat's eye, and so on.

此次他们还将带来八种稀有宝石，如：直径40mm的阿卡红珊瑚圆珠；价值2000万元的翡翠项链；重达91克拉的哥伦比亚祖母绿和70克拉的稀有红碧玺猫眼等。

According to molecular orbital theory, the main bonding orbitals of 3d transitionmetal monoxides MO are 9σ, 1δand 4πmolecular orbitals.

过渡金属氧化物与稀有气体原子间除了静电相互作用以外，通常还包含路易斯酸碱相互作用，即稀有气体原子作为路易斯碱可以提供电子给金属氧化物中基于金属中心的空的或部分占据的分子轨道。

It was found that earlytransition metal monoxides ScO, TiO and VO do not form noble gas complexes, whilethe late transition metal monoxides coordinate one noble gas atom in forming thelinear NgMO(M=Cr, Mn, Fe, Co, Ni) complexes.

对于前过渡的ScO，TiO和VO分子，它们的9σ，1δ和4π价分子轨道能量很高，不能有效地与稀有气体原子形成络合物，而对于后过渡金属一氧化物则可以配位一个稀有气体原子形成直线型的NgMO(M=Cr，Mn，Fe，Co，Ni)络合物。

The 3d transition metal monoxides coordinate one noble gasatom in forming the linear NgMO(M=Cr, Mn, Fe, Co, Ni; Ng=Ar, Kr, Xe) complexes.(3) The group VB metal oxides MO_2 and MO_4 coordinate two and one noble gasatoms in forming the MO_2_2 and MO_4(M=V, Nb, Ta; Ng=Ar, Kr, Xe)complexes.

3第VB族金属二氧化物与两个稀有气体原子形成的MO_2_2(M=V，Nb，Ta；Ng=Ar，Kr，Xe)络合物，其四氧化物与一个稀有气体原子形成的MO_4(M=V，Nb，Ta；Ng=Ar，Kr，Xe)络合物。

A considerable amount of China's rare and high energy consumption of electrolytic copper and silicon steel, the energy conservation work, lead to greater energy waste and the lack of China's scarce resources, leading to greater environmental damage.

耗用大量我国稀有且高能耗的电解铜和矽钢，在节能工作的同时，导致更大的能源浪费和我国稀有资源的匮乏，导致更大的环境破坏问题。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。