原理

A module of target recognition is set up and algorithm of data pretreatment and target recognition is discussed in detail. The detailed content is as follows.Firstly, this paper introduces the theory and output signal expression of a passive millimeter wave detector, based on the theory of an AC all-power radiometer.

全文的内容如下：首先，结合交流全功率辐射计的工作原理介绍了被动毫米波探测器的工作原理及输出信号表达式，并推导建立了探测器输出信号的数学理论模型，用计算机进行了波形模拟。

The theory minutely analyze trait of evolutionary programming arithmetic and state variables breakout problem in solving reactive power optimization problem, link reactive power balance theory.. reactive power bed and subarea control theory and adjusted-voltage material law of actual system. The theory first put forward a effective variability quantity modified measure, escape unfeasible problem in evolutionary programming, also make evolutionary programming arithmetic in solving reactive power optimization problem more quick and effective.

详细分析了进化规划算法的特点和在求解无功优化问题时存在的状态变量越限问题，结合无功平衡原理、无功分层分区控制原理以及实际系统中调压的具体规律，首次提出了一套有效的变异量修正措施，避免了进化规划的不可行问题，也使进化规划算法在求解无功优化问题时更加快速有效。

The lever-ball float type trap employs the buoyancy and leverage principles: to make the ball float ascend or descend by the change in the liquid level and then the ball float drives the lever to make the valve disc depart from or touch the valve seat to realize drainage and close the block vapor.

杠杆浮球式是利用浮力原理和杠杆原理，通过液位的变化使浮球上升或下降，浮球驱动着杠杆使得阀瓣离开或接触阀座达到开启排水和关闭阻汽的作用。

The paper mostly studies the super-high pressure abrasive water jet technology in following several aspect:At first, the structure of water jet beam as well as its characteristic and mechanism in cutting different kinds of material were discussed.

本文主要从以下几个方面对超高压水射流进行了研究：高压水射流与超高压磨料水射流的射流结构与形成原理；切割不同性能材料的切割机理；切割系统的控制；超高压水的发生原理及发生装置；在此基础上又通过基础实验与应用实验总结出切割不同材料过程中，切口形状的变化、影响切割表面的质量的各种因素及改善切割表面质的的措施；并对实验所用系统的计算机辅助设计过程与M软件的使用进行了介绍。

The basic principle of the trumpet is that blowing into the tube through taut lips sets up an audibly resonant vibrating column of air.

小号的基本原理（作者注：以及它的&兄弟姐妹&都有同样的原理）是通过嘴将空气吹进铜管体内使空气由于压力变化在里面共鸣振动发出声音。

In this paper, the current research situation of flotation technology and its application in water and waste-water treatment is reviewed. The mechanism of cavitation air flotation and the design mechanism of CAP cell are studied systematically and the design theory of CAF cell is proposed.

本文通过对近年来CAF气浮设备和应用研究成果的回顾，较为详细地分析研究了CAF气浮设备的工作及设计原理，提出了CAF气浮设备设计计算公式，讨论了CAF气浮机设计放大的基本原理和方法，初步建立了CAF气浮设备工作及设计计算理论体系。

Based on solidification theory and analysis of process of Aluminum alloy Direct Chill casting, the control system of DC casting for big size billet has been designed. For improving the quality of billet-optimized control strategy of cooling water must be determined to eliminate the instability of the traditional feedforward control, PID control and cascade control have been introduced.

通过对铝合金DC铸造工艺过程的分析，建立了铝合金DC铸造的控制系统；在分析DC铸造铸锭结晶凝固原理的基础上，完成了冷却水量自动控制的系统设计，并进行了控制策略的选择；基于对铝合金直接水冷铸造，DC凝固原理和工艺过程的分析，本文提出了大尺寸铝合金圆锭铸造的控制系统设计方案。

This paper has elaborated the PASSIM12K present situation and its composition and principle of cigarette machine weight control system , has analysed systematic working principle and major performance index , points out the existent problem in actual application on this foundation.

本文阐述了PASSIM12K卷烟机重量控制系统的现状及其组成和原理，分析了系统的工作原理和主要性能指标，在此基础上指出实际应用中存在的问题。

Analyzing the principle of equation fetching something for the Coal Stacker and establishing mathematics model for it, I analyze the principle of mixing coal while stacking coal elementarily, and use the punish function method to make process optimum.

分析了斗轮机等量取料的原理并建立了相应的数学模型，并初步分析了斗轮机在堆煤时的混配煤原理，用罚函数法对其进行了优化。

Vacuum freeze-drying is a technology used for drying, color protection, fresh keeping, or nutrition preservation of food, biologics, biomaterials, or micro/nano materials. Its principle is to use sublimation principle under the vacuum state, and to obtain dried products, whereby frozen water in the material sublime or shift directly from the frozen state to a gas state, and watery element is removed without melt.

冷冻真空乾燥技术是一项适用於食品、生物制品、生医材料、微奈米材料的乾燥、护色、保鲜、保存、保营养成分的技术，其原理是在真空状态下，利用升华原理，使预先冻结的物料中的水分不经过冰的融化直接以冰态升华为水蒸气而除去，从而获得乾燥制品。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。