放射性的

Along with the higher and higher requirements of the large-sized and ultra-large integrated circuit on the covering materials, it is necessary to be superfine as well as to be high-purity and low radioelement content, especially on particle shape.

随着大规模、超大规模集成电路对封装材料的要求也越来越高，不仅要求超细，而且要求其有高纯度、低放射性元素含量，特别是对于颗粒形状提出了球形化要求。

The animals were divided into two groups before the implantation of the iodine-125 granule into the tumor mass: control group (n=40, to implant no-load seeds, non-iodine-125 radioelement) and experimental group 〔n=40, to implant iodine-125 seeds (1.48×107 Bq) when the length of tumor was 8-10 mm〕.

采用雌性BLAB/c-nu/nu裸小鼠建立人类乳腺癌MCF-7细胞株的裸鼠皮下移植瘤模型，将荷瘤鼠分为2组，对照组（n=40）：植入空载粒子，无125I 放射性元素（0 Bq）；实验组（n=40）：瘤体长径达8～10 mm时植入125I 粒子（1.48×107 Bq）。

Being very important, radiogenic components of helium (3He from 3H, 4He from U/Th)have been extensively used for groundwater dating.

中文摘要：放射性衰变产生的氦组分（3H衰变质产生3He，U/Th衰变产生4He）广泛地用水地下水测年。

The volcanic rocks and ores characterized by high concentrations of radiogenic lead indicate that the deposit formed on mature island-arc environment, and most of the ore lead was derived from the same environment as the associated volcanic rocks.

火山岩、矿石以富放射性成因铅为特征，反映成矿环境为成熟的岛弧环境，矿石铅与火山岩铅应属于同一来源。

SHRIMP analyses give 206Pb/238U ages ranging from 335～424 Ma for the zircons, showing a certain degree of radiogenic lead loss; so the age of 424±5 Ma reflects the minimum age of the metamorphic zircons.

SHRIMP分析表明，锆石206Pb/238U 年龄为335～424 Ma，有放射性成因铅丢失现象，因此可以推断424±5 Ma代表高压变质事件的最小年龄。

Now I'm injecting a material that's tagged with a radioisotope.

我现在在注射一种以放射性同位元素做为标记的物质

It will be an excellent alternative for instruments based on radioisotope or fluorescent-labeling techniques.

它应该是取代放射性同位素或荧光标签技术的另一个极佳选择。

The machine can produce radioisotope capsule at different dose for treating different patients.

该设备能够按照要求生产出不同放射性剂量的同位素胶囊，供给患者服用。

Solar panels will supply power and radioisotope heater units will help it withstand the extreme cold on Mars.

太阳能电池板将提供电力，而放射性同位素加热器单元能够经受火星的严寒气候。

The addition of a radioisotope to the antibody is thought to offer another way to kill a cancer cell, and nearby cancer cells, with minimal toxicity to normal cells.

抗体上添加了放射性同位素，这被认为是提供了另一种杀死癌细胞及其周围细胞，而对正常细胞毒性最小的方法。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。