earth-approaching comet是什么意思

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用法例句

And the lateral aerodynamics changing regularity with height of an agriculture aircraft during low-altitude flight operation is presented.

分析了地面效应对飞机产生附加滚转和偏航力矩的气动新机理,研究了农林飞机近地作业飞行时横航向气动特性随高度的变化规律,推导了考虑地面效应影响时的飞机横航向静稳定性新准则,并分析了不同飞行高度时这些静稳定性的变化趋势。

Forward and inverse method for near surface seismic scattered noises;

近地表地震散射噪声的正反演方法

Study on the near-surface atmospheric carbon dioxide background concentration in Taihu Lake catchment;

太湖流域近地表大气二氧化碳本底体积分数观测研究

Background Density Characteristic of the Main Greenhouse Gas Near-surface in Tai Lake Basin;

太湖流域近地表主要温室气体本底浓度特征

Review of tomographic inversion for near-surface velocity structure.;

近地表速度结构层析反演方法综述

By use of the regional climate model RCMCI, which modifies the NCAR regional climate model Regcm2 by including a surface layer, we have performed 3 simulation experiments with observational data of June 1991.

把近地层引入到ＮＣＡＲ的区域气候模式ＲｅｇＣＭ２中（简称为ＲＣＭＣ１），用该模式及 １９９１年梅雨期间的观测资料作了３组模拟试验，并同实况进行了比较。

In this paper, an interactive model between soil - vegetanon - atmospheric surface layer has been designed with some new characteristics on the basis of some similar models.

本文在国外同类模式基础上，结合自己特点建立了一个土壤一植被－大气近地层的相互作用模式。

Using the latest data which gathered from the meteorological gradient tower by the height 80m in the hinterland of Taklimakan Desert,we detailedly analyzed the evolution characteristics of wind velocity,temperature and humidity profiles in the surface layer during a sandstorm passing Taklimakan Desert hinterland on April 10,2006.

利用塔中80m梯度观测塔探测系统采集的资料,详细的分析了2006年4月10日沙尘暴过境时,塔克拉玛干沙漠腹地近地层风速、温度和湿度廓线的演变特征。

The mechanism of Low earth orbit(LEO) satellite formation secular evolvement under the influence of gravitational perturbations is studied.

研究近地轨道卫星编队构形在引力摄动作用下的长期演化机理。

The Orbit Models for Designing LEO Satellite Constellations;

近地轨道卫星星座设计时的轨道模型