Pulsant test and vibration models dvaluation are discussed in dynamic detection . pulsant test mainly expounds pulsant experiment , transitting test , bounce test , braking examination . lt is judged by the cell damage index whether carving up cell comes to harm 其中脉动测试主要阐述了脉动试验、跑车试验、跳车试验、刹车试验。振型评估是通过划分单元的单元损伤指数来判断所划分单元是否受损。
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The new software named " d - gun " for ddos is carried out , which completed in windows 2000 and rethat linux . three characteristics of d - gun are lied out . first , it can complete all steps of attack automatically ; secondly , it support a lot of method of ddos , especially support echo attack method and pulsant attack method 本课题开发完成了一个独立的分布式拒绝服务攻击软件，开发平台是windows2000和redhatlinux ，其特色是跨平台自动传播，自动实现ddos攻击的全步骤；支持多种攻击模型，特别是构造了反射拒绝服务攻击和脉动攻击模型，攻击强度高且难追溯；有一定绕过防火墙的能力。
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Choose two nodes on the edge of the structural to compare the results calculating by the finite element program midas , then we can draw a conclusion that these kinds of space truss systems is sensitive to the libration of the dynamic wind loads . to consider this factor is very necessary in the process of design , we will use the pulsant augmentation coefficient to realize it 比较静力风荷载和动力风荷载作用下的有限元软件的计算结果，选取结构边缘部分的两个节点，对比它们在两种方法计算下的最大位移的计算结果。经过比较可以看出重量轻、频率低、阻尼小的柔性建筑物对风荷载的横向振动是很敏感的，在进行工程设计时应该考虑这种因素，并可采用乘以风振系数等相应方法来加以体现。
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The algorithm of svpwm that is adopted by the system implements motor speed - regulation by control of magnitude and phase of motor flux . it can generate less harmonics in the output current of power inverter and less losses of ac motor , reduce pulsant component in output torque and raise availability of dc supply voltage 系统采用的svpwm算法通过对空间磁链矢量幅值和相位的控制来调节电机转速，减少了逆变器输出电流的谐波，降低了脉动转矩，提高了电压的利用率。
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The characteristics of high pressure gyratory sprayed pumping discusses is presented , which is applicable in wide range of scope and ground layers , convenient for construction , long durability , wide source of materials . mechanism for subgrade strengthening : complex foundation of cement solid and earth between piles was formed by pulsant load of flowing pressure and spraying flow , water wallop , cavitation phenomenon , water wedge effect , extrusion force and air flow agitation etc so as to enhance foundation bearing force and reduce settlement and deformation 高压旋喷注浆技术具有适用范围、适用地层较广，施工方便，耐久性好，材料广阔等特点；其加固地基机理主要是通过流动压、喷射流的脉动负荷、水块的冲击力、空穴现象、水楔效应、挤压力、气流搅动等效应形成水泥固结体与桩间土的复合地基，从而提高地基承载力，减少沉降变形。
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Its products comprise various types of electrostatic precipitator 、 long bag low pressure pulse 、 positive ( negative ) pressure reverse flow 、 rhombus bag filter ( explosion proofing and ordinary type ) 、 pulsant rotary reverse flow flat bag filter 、 gas - box pulse bag filter ; flue gas desulfurization 、 waste water treatment facility and different nonstandard equipment 主要产品有各种型号的静电除尘器（管极式及极板式） 、长袋低压脉冲袋式除尘器、正（负）压反吹大布袋除尘器、菱形袋式除尘器（防爆型及普通型） 、脉动反吹扁袋回转式除尘器、气箱脉冲除尘器等收尘设备；烟气脱硫设备、水处理设备及各种规格的非标设备。
