查询词典 atomic weight

A hydrogen molecule consists only of two hydrogen atoms with the same atomic weight.

氢分子仅有两个原子量相同的氢原子所组成。

The most common isotope of oxygen, for example, has an atomic weight of 16, but there are also rarer isotopes with weights of 17 and 18, caused by additional neutrons in their nuclei.

例如很常见的同位素氧，原子重量是16，但是还有更为稀少的重量为17和18的同位素，这是因为它们的原子核中有额外的中子。

Atoms of the same element that differ in their atomic weight are called isotopes.

具有不同原子量的同一种元素被称为同位素。

Through improved marksmanship atomic weight of the volume has significantly reduced.

经过改进，枪法原子弹的体积重量已有显著缩小。

Iron comes betwee manganese and cobalt it in atomic weight.

铁的原子量在锰与钻之间。

This agreement shows that the method is available to complete the determination of atomic weight.

原子量测定结果的重合，说明 MC一ICP/MS绝对测量法同样可以完成原子量的测定。

In determination of atomic weight and isotope certified reference materials preparation, isotopic abundance almost is determined by this method.

在原子量的精确测量和同位素标准物质的研制工作中，一般采用此方法对元素同位素丰度进行定值，测量仪器多采用表面热电离质谱计。

With hydroponic culture, we studied the effects of Zn(superscript 2+) on dry matter and zinc accumulation in wheat seedlings using Chang 5864 as the experimental material. In this paper, Zn(superscript 2+) concentration in cultivating solution was 30 and 60 mgL^(-1), respectively, and 0 mgL^(-1) Zn was set as control. Seedling root and plumule were gathered every day from 4 d to 13 d after cultivation. We measured dry matter weight, and analyzed zinc concentration by atomic absorption spectrometry. The results showed that the dry matter accumulation in seedling root and plumule were all significantly improved under Zn treatment.

为了探明Zn在小麦植株中的吸收、分配和积累规律，以小麦品种长5864为供试材料，来用室内水培方法，于培养4~13d后取幼芽和幼根，用原子吸收分光光度计法测定样品中Zn的含量，研究了不同Zn(上标 2+)供应水平（0、30、60mgL^(-1)，分别用Zn0、Zn30、Zn60表示）对小麦幼苗干物质积累及幼苗Zn含量和积累的影响，分析了小麦幼苗中Zn的积累规律。

These results were the same as those by tetraphenylboron potassium weight method. analytical spectrum line ; flame atomic absorption spectrometry; mixed fertilizer ; potassium

该方法与操作繁琐、消耗试剂量大且费时的四苯硼钾重量法相比，简便快速，消耗试剂量小，适用于大批量的检测工作。1 实验部分1.1 主要仪器与试剂 AA

With the analysis of ADEV and HDEV for NTSC s more than 20 atomic clocks as well as the BIPM publications of rate and weight,the usability of a clock in high precision time keeping is discussed.

该文根据NTSC 20多台原子钟的ADEV和HDEV的分析、BIPM发表的TAI系统中原子钟的速率公报和权重报告，讨论了在高精度守时系统中对原子钟频率稳定度的要求。

This paper designs the communication system of radio telescope FAST.

针对500m口径球面射电望远镜FAST分布式控制系统的特点完成了其通信系统的设计。

Political sheep's step-by-step a large number of fossils unearthed in the county soil Ma Ali after rural village in the middle of sallow pelitic siltstone.

步氏和政羊化石大量出土于广河县阿力麻土乡后山村，产于灰黄色泥质粉砂岩中。