查询词典 NA

The alkaline mineral s which contain Na and/or K, such as feldspars, micas, etc.

化学组成中含有Na，K的含碱矿物，如各种长石、云母等，普遍存在于混凝土集料中。

At higher temperature Na+ can go into the channel of feldspars. The content of Na2O in feldspar increases up to 15.9 percent.

在高温条件下Na 与钾长石发生离子交换反应，能形成Na2O含量达15.9%的钠长石。

Shell gather candy in absorb while getting rid of drinking water harmful substancing , K+、Ca2+、Na+、Mg2+、SO42-、Cl-、HCO-3 ,etc. of adsorbed water, do not influence this density of bottom of the natural water body , and restrain funguses , sterilization function , it is the ideal absorbent drinks aqueous cleaning.

壳聚糖在吸附去除饮用水中有害物质的同时，不吸附水中的K+、Ca2+、Na+、Mg2+、SO42-、Cl-、HCO3-等离子，不天然水体的本底浓度，且有抑菌、杀菌作用，是饮用水净化的理想吸附剂。

We have an indigenous population of humanoids called the Na'vi.

这里的外星人种，我们称为 Na'vi 。

We have an indigenous population of humanoids called the Na'vi.

这里的外星人种，我们称为Na'vi 那美

In different degree of saline and alkali conditions controlled in lab or under field, contents as followed were determined: the absorption, transportation and distribution of major cations Na~+, K~+, Ca~(2+and Mg~(2+) in indicator plant; organic solute, and antioxidase activities, including superoxide dismutase, catalase and peroxidase POD characteristics of individual, population and community of the plant. Responses of the indicator plant to environment from physiological to community aspects were systemically discussed in this document.(1 Vegetional characteristics and edaphic indicators including bare patch index, dry biomass, percent cover by perennial plants, growth indicators of Leymus chinensis, soil organic matter and pH were sensitive to saline-alkali grassland degeneration.

运用室内控制和野外试验相结合的方法，调查和测定在不同土壤盐碱条件、不同季节里，主要元素Na~+、K~+、Ca~(2+)、Mg~(2+)在植物体内吸收、运输和分布的变化状况；研究不同土壤离子浓度下，指示植物体内渗透调节物质——脯氨酸和糖类、超氧化物歧化酶、过氧化物酶和过氧化氢酶活性等指标的变化响应情况；研究不同盐碱梯度下，植物个体、种群、群落的特征；系统的从生理生态角度探讨指示植物对盐碱环境的响应：(1)植被特征指标：裸地指数、生物量、多年生植物覆盖率；羊草生长状况指标：土壤有机质含量、pH可作为松嫩平原退化评价的指标。

The results show that the leachate is mainly composed of Na + and Si 4+.

结果表明，固化体浸出液中主要含 Na+和 Si4+，其次是 Cs+。

To venture out of our landing craft, we use avatars -- Na'vi lookalikes grown organically and mind-controlled by humans who remain wired up in a trance-like state on the ship.

翻译是：人类使用 avatars 来冒险走出登陆舰艇，而 avatars 是些由仍然待在船上，呈昏睡状态的人类，所有机生长并以心智控制，跟 Na'vi 很像的东西。

The complexing properties of compounds 10a, 10b, 11a and 11b toward alkali metal ions were studied by 〓H NMR titration, ESI-MS, UV-Vis spectra, Fluoresence spectra and liquid-liquid extraction. The results show:(1) the 1:1 complexes were formed.(2) The calix-crown 10a, 11a have a higher selectivity for Na〓 ions, whereas 10b, 11b for K〓 ions.(3) The complexing ability toward alkali metal ions was enhanced when the calix-crown have side arm carbonyl.(3) The coordination of alkali metal ions toward phenoxy, carbonyl and crown ethereal oxygens take place by rotation around the carbon-carbon bond of carbonyl and methylene.

六，用〓H NMR滴定，ESI-MS，UV-Vis，Fluorescence，液-液萃取实验研究了10a，10b，11a和11b对金属离子的配位性质，研究结果表明：1）杯芳烃冠醚衍生物同碱金属离子形成了1：1配合物，化合物10a、11a对Na〓具有较高的配位能力，化合物10b、11b对K〓具有较高的配位能力；2）在杯冠醚环的旁边引入带有羰基氧原子的基团作为侧臂参与配位可以加强对碱金属离子的配位能力；3）金属离子分别同苯酚氧，羰基氧，聚氧醚链氧发生了配位，配位过程中侧链基团涉及到了羰基碳与亚甲基碳的碳碳键的旋转过程。

There are no prominent variations of the micas in Li, F, Mn and Rb between zone c and zone d but sharp changes in these elements between zone d and zone e. In contrast to the primary micas in zone e, the altered micas in zone e show higher in F and Li but lower in Al. From zone a to zone e, the micas do not show remarkable variation in Na+K.

从c带到e带，随着Fe、Mg和Ti的减少，总体上表现为Al、Li递增，F、Mn和Rb递减的演化方向，但Li、F、Mn和Rb在c带和d带之间变化不明显，d带和e带之间却表现出急剧的变化。e带中的次生云母与原生云母相比，前者F、Li高而Al低，从a带到e带，Na+K变化不明显。

The concept of equivalent rotationally rigidity is offered and the formula of rotationally rigidity is obtained.

主要做了如下几个方面的工作：对伸臂位于顶部的单层框架—筒体模型进行分析，提出了等效转动约束的概念和转动约束刚度的表达式。

Male cats normally do not need aftercare with the exception of the night after the anesthetic.

男猫通常不需要善后除了晚上的麻醉。