The calculation models are set up on average speed and max speed in back field and jet effect distance, new theoretical reference is provided for effective ventilation in heading fa.
给出了回流区平均速度、最大回流速度及射流作用距离的计算模型， 为掘进工作面合理有效通风提供了新的理论依据。
The working distance equation of underwa.
考虑发射系统和接受系统间的距离,建立了激光水下光电成像探测系统的一般理论模型;推导了信号辐射、后向散射、前向散射的计算方法;给出了考虑前向散射和背向散射作用下的成像对比度计算方法;最后导出了水下成像系统的作用距离方程。
Analysis on operating range of a staring infrared search and track system for high-speed aircraft;
凝视型红外搜索跟踪系统对高速飞机作用距离的分析
Theoretic Calculation of Operating Range of Infrared Imaging Guidance Based On the Moving Target;
机动目标红外成像制导作用距离的理论计算
Operating range prediction of infrared imaging system;
红外成像系统作用距离的估算
The paper analyzes the performance of laser active imaging system by giving a model of operation range based on the resolving power,the modulation contrast ratio,the minimal detectable laser power,and the signal-to-noise ratio of the system respectively.
针对空间目标探测,介绍了激光主动成像系统的组成,详细分析了空间目标及背景的辐射特性;根据成像分辨率、调制对比度、最小可探测功率、系统信噪比等参数,分别给出作用距离模型,并对激光主动成像系统性能进行分析和仿真计算;仿真结果表明:利用激光主动成像探测系统可对一定距离的空间目标进行成像探测。
Simulation analysis is performed to study the influence of amount of damaged elements on sonar directivity and the impact on sonar operation range under certain circumstance.
以指向性函数一般表达式为基础,通过把倒圆台阵有基元损坏的情况转化为加权系数,得出其空间指向性函数和水平指向性;仿真分析了倒圆台阵基元损坏个数和位置对声纳空间指向性和水平指向性的影响,以及在一定环境下对声纳作用距离的影响,从而得出基元损坏达到何种程度时基阵的技战术性能不再符合要求的意见。
According to the difference in temperature between thermal wake and seawater,the operation range of the detector to thermal wake was calculated.
并根据热尾流与周围海水的平均温度差计算出红外探测器对潜艇热尾流的作用距离。
On Abstract-principle and the Relativity of Receipts;
论票据的无因性原则及其相对性——票据无因性原则“射程距离”之思考
(of guns)fire bullets,etc over(a distance)
（指枪炮）射程达到（某距离）
He shot the lion at point-blank range, ie when it was so near that he could not miss.
他在近距离平射射程内向狮子射击.
He shot her at point-blank range.
他在近距离射程内射中了她.
The distance between a projectile weapon and its target.
射程投射性武器与其目标之间的距离
To be capable of reaching(a maximum distance).
有…的射程能够达到（最远距离）
(of bullets,missiles,etc) travel(a distance)
（指子弹、导弹等）射程达到（某距离）.
To determine the distance of(a target).
确定射程测定（目标等）的距离
At this range, the enemy is too far away for standard rounds to be effective.
这个距离远远超过了子弹的有效射程。
have a range; be capable of projecting over a certain distance, as of a gun.
有射程；能够延伸出一定的距离，关于枪支。
The distance that an arrow can be shot.
射距射一箭所能达到的距离
fire point-blank at sb
在近距离内向某人射击
positive contact off-bottom spacer
喷射眼距井底最优距离定位器
Don't get within range of their big guns;surround the camp from a distance.
不要进入他们大炮的射程以内，要隔一段距离包围住敌营。
The marines could shoot from a distance and also do close hand-to-hand combat.
舰队可远距离射击也可作短距离的战斗。
medium-, and long-distance events,
中程和长距离的比赛，
how far; to what extent
至于什么距离、程度等
virtual tube distance
观测部位与鱼雷发射管间的距离