Launch numerical aperture (LNA)是什么意思

网络释义

用法例句

Research of Rocket-Launcher System Mode;

车载火箭发射系统试验模型模态研究

From the viewpoint of the weapon system,some new theories in the launch dynamics and transfer matrix method of multibody system are used to study the method to improve the firing accuracy of ballistic missiles and to analyze the causes of errors influencing the missile accuracy.

该文从武器系统的角度,应用发射动力学和多体系统传递矩阵法新理论,研究了提高弹道导弹命中精度方法这一导弹领域的世界热点课题,分析了影响导弹精度的误差源,从理论、计算、试验三方面,立足于导弹武器系统动力学性能与武器系统总体参数之间的定量关系的准确描述,探讨了提高导弹精度的新思路和方法,为提高弹道导弹命中精度提供新手段。

The paper introduces the launch modes and characteristics of the high speed and low speed near space aerocraft.

介绍了高速临近空间飞行器和低速临近空间飞行器的发射方式和特点。

In view of electromagnetics leakage in 100BASETXLAN, couple model and simplied model of transmision signal were presented after analysing the transmission principle of twistedpair wire.

　针对100BASE-TX局域网的非屏蔽双绞线的电磁信息泄漏的现状,在分析非屏蔽双绞线的传输机理的基础上给出了计算传输信号的耦合模型和简化模型,主要介绍了非屏蔽双绞线的传导发射电磁兼容测试的原理、方法和平台。

The chemical content structure and mechanism of emission under the vltraviolet excitation of the sample were investigated.

１８５；该荧光粉在２５４ｎｍ紫外照射下，能发射出波长范围在３００～４００ｎｍ，波峰在３３５ｎｍ的紫外光，这种波长范围的荧光粉是制造黑光灯的良好材料。

DMF-1 Micro-Power Meter of Testing and Transmitting;

DMF-1微功率检测发射仪

A transmitting and receiving system used in high frequency ultrasound imaging is introduced and has been used for image collection of 10MHz、20MHz and 50MHz HF ultrasonic imaging equipments.

介绍了一种用于医用高频超声成像设备的发射与接收装置,并已分别用于10MHz、20MHz和50MHz高频超声成像系统的图像采集。

This paper discusses transmitting and recelving technique of multichannel microwave Distribution System (MMDS), the structure of circuit system and the good results obtained in CATV (Community Antenna Television) application.

本文论述了有线电视多路微波分配系统（MMDS）的发射与接收技术特点，着重分析电路结构、系统组成及其在有线电视应用中所获得的良好效果。

Study on the Principle of Launching and Control of ГШ-301 Aircraft Gun;

ГШ-301航炮发射控制原理研究

The launching training plays an important role in the whole training course for artillery arms (rocket arms).

火箭炮发射训练是炮兵(火箭炮)部队训练的重要内容。

The relative characteristics of motion of the fuel and shell upon launching is analyzed.

通过力学分析与计算 ,探索了燃料空气炸药 (FAE)壳体与燃料在发射过程中的相对运动特性 ,指出了在发射过程中 ,在距离战斗部顶端一定范围内 ,壳体与燃料不但会存在相对运动 ,而且不同层位处的燃料也存在相对运动 ,这是FAE战斗部在发射过程中的特有现象 。