查询词典 LD

The seeds of Adzuki bean were irradiated by 60 Co γ ray of 0～700Gy.The results showed that:(1)The sub\|lethal dose(LD 50 )was 389Gy and the early seedling leaf at M\-1 showed incised,chlorotic,yellow,mosaicand curly edge.The absorbed dose was related with the rate of misshaped leaf.Chromosomal aberration, chromosome bridge and fragment of M\-1 in the tip were observed.If the seed was irradiated with 400Gy,the rate of abnormal cell at the root was more than 10%.The relationship between pollen fertility and irradiation dose was negative correlated.

本试验研究结果表明：60 Coγ射线辐照小豆种子的半致死剂量平均为 3 89Gy ，且M1生长初期叶片性状有明显的叶面缺刻、叶色缺绿、叶形不对称、叶缘卷曲、花叶、黄叶等致变现象，各种畸型叶出现频率与辐照剂量大小有关；M1根尖细胞中有多种染色体畸变类型，以染色体桥和断片频率较高，辐照剂量在 40 0Gy以上时根尖细胞异常率达 1 0 %以上；植株花粉育性与辐照剂量呈极显著负相关，京农 2号植株花粉育性达 5 0 %时的辐照剂量为 3 78Gy。

He who mistrusts most shou ld be trusted least.

最不信任别人的人最不应该得到信任。

Should the world's most privileged people learn about the lives of the wor ld's least privileged?

那些世界上过着最优越生活的人们，有没有从那些最困难的人们身上学到东西？

A hotwire anemometer was used to measure the jet velocity at the exit of the precessing jet nozzle and the power spectrum density was obtained afterwards in order to analyze the precessing feature of the jet. It is shown that an obvious precession motion is generated in a nozzle even with a large expansion ratio E=10 and a small length-to-diameter ratio LD=2. The precessing frequency is mainly dependent on the nozzle diameter and the intake flow rate, increasing with the enhancement of the flow rate and with the reduction of nozzle diameter.

采用热线风速仪测量旋进喷嘴出口射流的速度，并对该射流进行功率谱分析以研究其旋进特性，结果表明，实验所用的膨胀比E=10、长径比L/D=2的喷嘴同样能产生明显的旋进射流，旋进频率主要取决于喷嘴的尺寸和射流的流速，并随流速的增大和喷嘴直径的减小而增大。

In each period, LD lights in advance of the time of the output laser pulse occurrence and quenches behind the laser pulse.

在每一个周期中，激光二极管在输出激光脉冲前的某一时刻打开，在输出脉冲后的适当时刻关断。

America tends to make peop le m iserable w hen they areo ld and there are no t enough ph rases in the dict ionary to glo ss over the ugly reality.

美国社会往往使老年人感到痛苦，而英语词典中却没有足够的委婉语能掩饰住这一丑恶的现实。

I've been rumbled ; someone must have to ld mom.

我被揭穿了，一定有人告诉妈。

The first two Secretaries-General were Trygve Lie of Norway and Dag Hammarskj?ld of Sweden.

头两任秘书长是挪威的特里格夫·赖伊和瑞典的达格·哈马舍尔德。

Magnetic actives cell soring ED method could purify platelets effectively.

LD柱负向磁性细胞分选技术可高效去除有核细胞，且对血小板影响较小。

Results The karyote clearance of platelets purified by magnetic actitated cell soring LD and MS was (98.47±0.18)% and (98.44±0.24)% respectively.

采用流式细胞术检测分选前后血小板活化膜分子CD62P的表达情况，比较分选前后血小板活化程度差异。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。