查询词典 Low Mass

Corylus heterophylla vegetative propagation was relatively difficult, layering method was mainly used at present, but low coefficient of propagation limited mass production of its seedlings.

榛子是一种无性繁殖相对困难的树种，目前主要采用压条法进行繁殖，繁殖系数低，这限制了榛子苗的大量生产。

Accelerator mass spectrometry has ultra-high sensitivity and can be used to detect extremely low impurity contents in samples. 10Be is a cosmogenic nuclide. As a tracker, it has been widely applied to earth, environmental and cosmographic sciences.

加速器质谱计具有很高的灵敏度，能测量样品中含量极微的杂质同位素。10Be是一种宇宙成因核，在地学、环境科学和宇宙学等领域有广泛的应用，它为纯β衰变核，端点能量低且半衰期很长。

Ca is widely abundant in nature and its rodioisotope 41 Ca is a cosmogenic nuclide with a half\|life of 10 5 years. However, the 41 Ca/ 40 Ca ratio in natural samples is very low and can only be measure d by accelerator mass spectrometry. The application of 41 Ca is ve ry i mportant not only in the life science but also in geological dating, global envi ronment change studies and astrophysics.

1 引言Ca在自然界中广泛存在，它不仅是人体中含量最丰富的元素之一[1] ，也是众多其他物质的组成部分。41Ca(半衰期为 1.0 3× 10 5a)属于Ca的放射性同位素中的一种，其衰变方式为轨道电子俘获，只发射3.3keV的X射线，天然样品中41Ca 40 Ca的值很小。

The desmoid tumor was irregular low echo mass on ultrasonographic.

CT表现为低密度软组织肿块(9例)，等高密度肿块(1例)，强化程度不等。

This resembles the relationship between Newtonian and Einsteinian physics—the older system is still valid at low energies, but if you push mass and velocity high enough you get surprises like nuclear explosions or Linux.

这就像 牛顿式的和爱因斯坦式的物理之间的关系——旧的系统在低能量下仍然有效，但当你把质量和速度变得足够大的时候，你就得到了如同核爆炸或 Linux 那样的惊奇。

Results In four cases, one was lipochoristoma of the acoustic nerve, two were low-grade papillary adenocarcinoma of endolymphatic sac origin, and another one was juxtaoral organ of Chievitz presenting clinically as a tumor mass.

结果 1例为听神经脂肪瘤样迷离瘤，2例为内耳内淋巴囊来源的低级别乳头状腺癌，1例为类似肿瘤病变的Chievitz口旁器官。

Low density silicon nitride with about 55% porosity and globed macropores was prepared by reaction-bonded raw silicon powder and adding 30% in mass pore-forming agent of benzoic acid ball-like particles.

以硅粉为原料，添加质量分数为30%的成孔剂球形颗粒，反应烧结制备了气孔率为55%，具有球形宏观孔的低密度多孔氮化硅陶瓷。

In the diet, the proportion of Platycephalidae, an important prey of juvenile A. sinensis in the past, was very low, only accounting for 1.81% of the total food by mass, while that of Gobiidae and Isopoda, which had not been recorded in the diet, was higher, accounting for 50.54% and 10.07% of the total, respectively.

与历史资料进行比较发现，曾是幼鱼重要饵料的鲬类所占比例极小，其质量百分比仅占1.81%；而以前未曾记录的虾虎鱼类在食物中所占比例较高，其质量百分比达50.54%；等足类以前也未曾记录，其出现频率达10.07%。

It finds that under the dual economic structure, the relatively low development degree of the modern industry and the detention of the mass labourhood in the countryside have led to the shortness of the land resouce per capita, the waste of the country laborhood, and the restriction of the growth of peasants'income.

勾画了二元经济结构制约农民收入增长的机制，指出由于二元经济结构条件下现代工业发展程度较低，大量劳动力滞留在农村，造成人均土地资源较少，农村劳动力得不到充分利用，制约农民农业经营收入增长。

Using wireless temperature logger produced by ebro, German, several important factors which influence temperature field obviously have been found. They are loadage, low temperature air mass, temperature controllers and location of temperature sensors. Some suggestions also have been given.

以德国ebro生产的无线温度数据存储器为测温设备，在总结大量实验数据的基础上分析出影响温场的几个重要因素：装载量、残余冷汽团、温度控制器、温度探头位置，并对其影响温场的原理做了通俗易懂的阐述，且结合实际使用情况给出建议。

This paper discusses design and realizable methods of remote test output interface from logical design angle.

本文从逻辑设计的角度讨论遥测输出接口的设计及实现方法。

This also 星体投射plies to buildings, structures and geological features.

这也适用于建筑物和地质特征。