查询词典 cluster sampling

And then, it builds the arithmetic model of bomb consuming to invade and dynamite cluster missile damage airdrome target under various tasks.

在此基础上，构造了不同作战任务要求下的侵彻爆破子母弹毁伤机场目标的耗弹量算法模型。

This programme can be used to optimize parameters of the cluster adapter and airdrop experiment. It is an effective analyzing means to the weapon system design and application.

本文工作可以对子母弹箱参数及空投条件进行优化，为该武器系统设计及使用提供了一种有效分析手段。

The sophisticated design of the instrument cluster on C5 Airscape reflects the requirements of optimised ergonomics and ensures that information is laid out legibly.

关于碳五鸟瞰仪表的设计体现了先进的人机工程学优化的要求，并确保信息的布局易读。

Bryant may never serve a day behind bars, but that doesn't mean he won't understand what Alcatraz was like, even if his solitary confinement includes room service and a cluster of bodyguards.

科比从来没有在监狱里待过一天，不过这并不意味着他不知道监狱Alcatraz是个什么样的地方，即使他的单独监禁具有房间服务和一群保镖的保护。

You know Aldebaran is not a true member of the Hyades cluster because – at 65 light-years – it is so much closer to us.

你要知道毕宿五其实并非毕星团的一员，因为65光年的距离，它更接近我们。

Contrast Capella with Aldebaran, shining in the constellation Taurus to the right, and to the stars of the misty Pleiades cluster higher up.

如果将金牛星座右侧的毕宿五星星，高高的昂星团星群和五车星作对比的话。

Contrast Capella with Aldebaran, shining in the constellation Taurus to the right, and to the stars of the misty Pleiades cluster higher up. The light from a star reveals many things, but most directly the stars' surface temperatures.

将五车二与闪耀于金牛座右方的毕宿五和星空更高处模糊的昴宿星团的星体相比，星体发出的光可以体现出很多东西，而最直接的就是体现星体表面的温度。

The document is a group of data mining areas, cluster analysis of the algor...

该文件是一组数据挖掘领域中，聚类分析的有关算法。

It is concluded that, first, geochemical data of the surface soils can clearly distinguish two kind of soils, that is, juvenile soils, for example, purple soils, which inherits most geochemical characteristics of the parent rocks or materials, and anthropic soils, the geochemical characteristics of which have been greatly changed as the results of intensive impact from variety of agricultural uses. Second, different soils have typical indicator elements association respectively due to different parent rocks or materials and utilization, such as purple soils, yellow soils (low alkali and alkaline-earth metal contents and pH value), paddy soils (high organic element and heavy metal elements contents) and fluvo-aquic soils (high rock-forming accessory mineral elements contents) and so on. Consequently, it can be suggested that elements association is an important indicator for two key factors (parent materials and anthropic activities) of soil classification. Third, some differences exist between soil genesic classification and result of cluster analysis, because geochemical characteristics of surface soils can not completely represent the foundation applying to soil genesic classification, that is, condition and process of soil-forming, and soil property.

结果表明：浅层土壤的地球化学数据能较好地用来区分两类土壤，即紫色土一类的幼年土壤（在很大程度上继承了母岩、母质的地球化学特征）和受强烈人为活动水耕、早耕熟化的土壤（外来物质的不断加人显著地改变了浅层土壤原有的地球化学性质）；(2)各类土壤因母岩母质和利用方式不同，各具明显的标志性元素组合特征，如紫色土、黄壤（低碱和碱土金属元素和pH值）、水稻土（高有机元素、肥料元素和重金属元素）和潮土等，因此，这些元素组合是土壤分类两个要素的重要参照系；(3)浅层土壤的地球化学特征不可能完整地体现成土条件、成土过程和土壤属性这三个发生分类依据，因此，聚类分析结果与发生类型之间存在一定的差异。

This work shows a new possible pathway in the reaction of zirconium oxide cluster anions with alkane molecules.

该工作揭示了锆氧负离子团簇与烷烃反应中的新通道。

We have something to do in the new stage.

在这段崭新的时期中，我们有一些要做的。

The difference between tourism decision-making under uncertainty and risky tourism decision-making is indistinctive.

其中不确定性旅游决策和风险旅游决策的界线比较模糊，两者的区分是相对的。