查询词典 sampling fraction

The main results are shown as follows:1.Screening freezing tolerant cultivars and lines of chrysanthemumTwenty seven lines of chrysanthemum grown outdoors were screened using \'injury rate\' and \'injury index\'.There were 7 cultivars and lines,which were relatively high tolerant to freezing treatment,i.e.,\'Jinbuhuan\',\'Xuetao\',\'Fuli\',\'Donglin 4\',\'Donglin 6\',\'Donglin 9\', and \'Donglin 13\'.There were 3 cultivars and lines,which were less tolerant,i.e.,\'Fenmeigui\', \'Donglin 1\',and \'Donglin 2\';The determination of electrolyte leakage,and contents of free proline,MDA,CAT,fructose,glucose and soluble sugars on 7 lines of chrysanthemums at different stages freezing showed that \'Xuetao\' and \'Donglin 4\' were more tolerant than others, and that especially \'Donglin 4\' was able to regulate its osmotic pathway to alleviate the \'injury degree\' caused by freezing conditions.2.Protein expression profile of chrysanthemum under low temperature stressTwo-dimensional liquid chromatography was applied to fractionate and analyze total protein taken from \'Donglin 4\' leaves grown at low temperature and at normal condition. Chromatography peaks of fraction were transformed to gel graph by ProteoVue software.

主要研究结果如下：1、露地菊抗冻品种和品系的筛选利用受伤率和伤害指数两项指标对27个露地菊品系进行耐低温筛选，筛选出'金不换\'、'雪涛\'、'富丽\'、'东林4号\'、'东林6号\'、'东林9号\'、'东林13号\'等7个耐低温品系，同时发现'粉玫瑰\'、'东林1号\'、'东林2号\'三个品系的耐低温能力最差；通过对不同自然低温处理时期，7个品系的电导率、丙二醛含量、脯氨酸含量、过氧化氢酶、果糖、葡萄糖和可溶性糖等指标的测定发现，'雪涛\'和'东林4号\'的耐低温能力要强于其它品系，尤其是'东林4号\'对低温的调节能力较强，在低温胁迫下，能够调节渗透途径减轻低温的伤害。2、低温胁迫下，露地菊蛋白质表达谱分析利用二维液相色谱技术，分离了'东林4号\'露地菊品系的低温处理和对照样品的总蛋白，通过ProteoVue软件分析发现：处理样品与对照相比共有蛋白差异点36个，其中显著增强表达的蛋白差异点有26个。

The second general problem of cell fractionation is the contamination of each fraction by others.

细胞组分分离的第二个普遍问题是各组分的相互掺杂。

On the other hand, annual worldwide deaths by fugu amount are just a small fraction of that.

另一方面来说，每年世界范围内死于河豚中毒的只是其中一小部分而已。

An "enhanced radiation " warhead is just what it says, a nuclear weapon where the design has been "tweaked" so that a larger fraction of the energy release from fission/fusion comes out of the bomb case as radiation .

一个"增强放射性的弹头"应像它说的那样，则应有众多的微量能量从"核弹"中释放出，放射性。

The main sugars in fraction A were mannose, galactose, and glucose.

组分A中主要含甘露糖、半乳糖和葡萄糖。

In humans and many other mammals, most antibodies are in the gamma globulin fraction of blood.

人类及许多其它哺乳动物体内形成的抗体即存在其中。

In humans and many other mammal s, most antibodies are in the gamma globulin fraction of blood.

人类及许多其它哺乳动物体内形成的抗体即存在其中。

We visited the two universities, the University and the Chinese very different, no walls, no style of the gatehouse, do not attract much attention at the door only a small fraction of a brand, is very ordinary.

我们去参观了两所大学，和中国的大学很不一样，没有围墙，也没有气派的门楼，不起眼的大门上只有很小的一块牌子，非常普通。

Also the morphology and mechanical properties of fiber membranes with different mass fraction of gelatin were studied.

研究了不同明胶比例的纤维膜的微观形貌和干湿态的力学性能。

One involves the rise of high-speed trading: some institutions, including Goldman Sachs, have been using superfast computers to get the jump on other investors, buying or selling stocks a tiny fraction of a second before anyone else can react.

其中的一个涉及到了快速交易的崛起：包括高盛在内的许多机构通过使用超高速电脑抢在其他投资者之前行动，在别人做出反应之前的几分之一秒买卖股票。

"Second Life is remarkably easy to work with, and is very popular,"

"第二次生命是显着容易的工作，并且很受欢迎，"

For example, we usually assume that materials are homogeneous and isotropic and free of internal defects or flaws.

为了得到适合有限元分析的模型，我们必须经过如图2所示的简化步骤。