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- The high frequency pulse 50-100/sec is known as dense wave, the low frequency pulse 2-5/sec termed as rarefaction wave. 频率快的叫密波(高频),一般在50-100次/秒,频率慢的叫疏波(低频),一般在2-5次/秒。
- It provides an alternation of rarefaction wave and dense wave, each wave lasting for one and a half second. 是疏波、密波自动交替出现的一种波形。
- Influences of plasma shielding and rarefaction wave on impulse coupling coefficient[J]. 引用该论文 章玉珠;王广安;沈中华;倪晓武;陆建.
- The rarefaction wave immediately behind shockwave decompressed the shattered rock and threw them along with jet current. 紧接着冲击波后面形成的稀疏波使压碎的岩石减压并随喷射流(气浪)抛出。
- The scheme deals effectively with both shock and rarefaction waves. 在计算接触间断方面比线性间断分解格式的结果要差些。
- The newly developed rarefaction wave gun(RAVEN) can achieve low recoil momentum without decreasing the muzzle velocity of the projectile by means of delayed venting the breech. 膨胀波枪炮利用延时打开膛尾的方法实现了在不降低弹丸初速的前提下大幅度减小枪炮后坐的目的。
- The traditional rarefaction wave diagnosis method is improved by means of dual-page memory data acquisition apparatus and by using GPS time-label pinpointing leak location. 它采用双扭环技术和GPS时钟同步技术实现对传统负压波诊断系统的改进,采用假设检验和模糊数学理论对小泄漏故障负压波进行诊断。
- By combining the transient change model method and rarefaction wave method, the multidimensional rules to detect the leakage and locate the leak point were set up. 并结合管道瞬变模型法与负压波法建立多维判别法则,解决输油管道泄漏检测及漏点定位的问题。
- In the light of the shortcomings of small leakage diagnosis of oil pipe line, a new leakage detection method based on modified rarefaction wave diagnosis model is presented. 针对国内外对输油管道小泄漏诊断工作存在的不足,研究了一种基于改进的负压波诊断模型的泄漏诊断方法。
- The classical elementary waves in Riemann solutions include rarefaction wave, shock wave and contact discontinuity. 黎曼解涉及的经典基本波包括疏散波、激波和接触间断。
- As the quenching speed of the strong rarefaction wave reaches610Ks-1, a nonequilibrium ionization-recombination process takes place, during which the ion recombination with electrons dominates. 首先通过反射激波加热使试验气体电离,随后利用在激波管高压室端部反射的强稀疏波使反射激波后5区离化气体快速冷却,由于稀疏波的冷却速度达到610Ks-1,创造出使离化气体处于以电离复合为主的非平衡过程的条件。
- Gun recoil force reduction technology mainly include out-of-battery, superlong and tandem superlong recoil,2D recoil, muzzle braking, rarefaction wave gun and electromagnetic rheologic fluid etc. 膨胀波火炮红外目标特征太明显,要求能精确控制火炮相关机构,需系统、全面地研究探索内弹道技术、火炮自动机技术等相关技术。
- After gaseous detonation reflects on the right wall, the right-traveling rarefaction waves accelerate the reflected shock. 气相爆轰波在右壁面反射后,右行稀疏波加速反射激波。
- The simulated results show that the proposed schemes can deal with the rarefaction waves, shocks, the reflected shocks, the reverse flows and the dry/wet fronts very well. 经由模拟结果显示,本文之算则能够正确地模拟出膨胀波、震波、反射震波、回流以及乾湿交界波前等水流现象。
- The results show that, when detonation sweeps a contact surface of inert gas, interactions of detonation, transmit shock and contact surface take place; in condition of high N2 dilution proportion, detonation is decoupled by rarefaction waves. 在高N2比例稀释的可燃混合气体情况下,当爆轰波平掠过特定惰性气体界面时,它与惰性气体界面相互作用产生的稀疏波可以导致爆轰波的解耦。
- Bill wave his hand to us and then drive away. 比尔向我们挥手告别后开车走了。
- Radio2 can be heard on the long wave band. 第二广播电台可在长波段收听到。
- Albedo of X-ray through the region of rarefaction wave X光辐射通过稀疏波区的反照率
- Numerical Modeling and Analysis on Rarefaction Wave Gun 膨胀波枪炮发射原理数值建模与分析
- I am able to pick you up on the short wave radio. 我能用短波收音机收听到你的信号。