查询词典 ballistic trajectory

The measurement accuracy of the photoelectric theodolite is decided based on measurement requirement of the ballistic trajectory. Two simple equations were derived mathematically, one expression for positioning error of the ballistic trajectory, angle error of the photoelectric theodolite, ranging error, target slant range and height when one instrument is used, another expression for positioning error of the ballistic trajectory, angel error of the photoelectric theodolite, target slant range and intersection angle when two symmetrical intersection instruments are used.

通过数学解析的方法，推导建立了2个简洁的公式：1）单站定位体制下弹道点位精度和光电经纬仪测角、测距精度以及目标斜距、高角之间的数学表达式；2）对称交会测量体制下弹道点位精度和光电经纬仪测角精度以及目标斜距、交会角之间的数学表达式。

It has six kinds of texture: felt-like cryptocrystallineballistic texture, fascicules ballistic texture, radiated ballistic texture, porphyritic texture,gyrated ballistic texture, replacement remnant ballistic texture.

通过镜下分析，栾川软玉的主要矿物成分为透闪石，一般含量在 95%以上，结构可分为毛毡状显微交织变晶结构、纤维束状变晶结构、放射状变晶结构、似斑状结构、旋转结构、交代残余结构。

The infrared simulation in ballistic target boost phase has an important applied value in many aspects, such as ballistic target identification, inpouring infrared tracking system testing and infrared tracking examination etc. The space-borne infrared detection system design technology is one of important contents in the ballistic missile defense in respect to ballistic target.

推进段的红外仿真在弹道目标红外识别、注入式红外跟踪系统测试、红外跟踪试验等方面有著重要的应用价值；与之相关的空载红外探测系统设计技术是弹道导弹防御仿真的重要内容之一。

To create a mathematical model for the hydro-ballistic trajectory of high speed pellet entering water, the hydro-ballistic trajectory and cavity of sphere and pistol pellets entering water at three oblique angles and six velocities have been experimentally studied using a high-speed digital video recorder.

为了建立高速弹体入水弹道的模型，利用数字式高速录像机实验研究了球形与普通手枪两种弹丸在三个入水角、六种发射速度下斜入水的水中弹道轨迹与空泡。

In order to improve penetrativity of hypersonic missile and enable air-launched hypersonic cruise missile to penetrate with skip trajectory, a new approach of generating positive angle of attack during reentry phase of trajectory was proposed. Some key parameters of realizing skip trajectory were found out, and the effects of these parameters on ballistic performance were discussed.

为提高高超声速导弹的突防能力，使常规布局空中发射的高超声速巡航弹能采用跳跃式弹道突防，采用了在导弹再入段附加相应的正攻角产生气动升力的方法，找出了实现弹道起跳的关键参数，讨论了这些参数对弹道性能的影响。

Scientific bore-hole trajectory prediction can not only guide trajectory design and predict drilling trajectory parameters , but also optimize BHA and improve trajectory control accuracy .

科学的井眼轨迹预测不仅可以指导轨迹设计，预测实钻井眼轨迹参数，而且可以优化下部钻具组合，提高轨迹控制精度。

Scientific bore-hole trajectory can not only guide trajectory and predict drilling trajectory parameters, but also optimize bottomhole assembly and improve trajectory control accuracy.

科学的井眼轨迹反演不仅可以指导轨迹设计、反演实钻井眼轨迹参数，而且可以优化钻柱底部组合、提高轨迹控制精度。

Some methods that are usually used now and their characteristics of bore-hole trajectory are introduced; Analysis the main factors which affect bore-hole trajectory; A model of rock-bit interaction is developed by accounting for the anisotropic drilling characteristics of both the formation and the bit; Base on the model of static behavior of a bottomhole assembly design a bore-hole trajectory; produce a demo of bore-hole trajectory base on 3DS Max.

本论文对井眼轨迹反演理论及方法作了简要的分类，介绍了几种目前常用的井眼轨迹反演方法及其特点；分析了影响井眼轨迹的主要因素；综合考虑地层和钻头的各向异性钻井特性，建立钻头与地层相互作用模型，基于钻柱底部组合力学模型设计出一条井眼轨迹；制作了基于3DS Max的井眼轨迹演示动画。

The texture ofserpentine can be divided into the following category: micro ballistic texture, lepidoblastictexture, filer ballistic texture, replacement remnant ballistic texture, porphyritic texture.

栾川蛇纹石玉结构可分为：显微变晶结构，鳞片变晶结构，纤维变晶结构，交代残余结构，似斑状变晶结构。

On the basis of the analyzing the whole launching process, the mathematics model of the inner ballistic is deduced. Computer procedure is complied through Visual C++ development tools, which simulate the launching process and obtain the main performance curve of inner ballistic trajectory. Mathematics model is also modified through the experimentation data. At the same time, the experiment has proved that the new launching technique has the capability of raising the muzzle velocity.

在此基础上，本文针对提出的辅助药室火炮结构建立了再生式液体发射药辅助药室火炮发射过程的零维数学模型，并利用VC++开发工具编制了计算机程序，对整个发射过程进行了模拟，得到了内弹道的主要性能曲线。

Cable dampener cannot be rolled up but must be hung over the cable.

缆帆不能被卷起，必须保证处于展开状态

"This skylark is a present from my master," he says.

"这只云雀是我主人献上的礼物。"他说。