Theobserved strain is 10~2 times as local point strain at the same observed stress.This indicates that macroscopical symmetrical rock is quasi-brittle materialwith microcosmic heterogeneousness and its macroscopical mechanicalbehavior is the results of reciprocity and magnification between microcosmiccharacteristic, not simple sum.(4) The degree of irregularity of strain increases with the number of cycle.But degree of irregularity of transverse strain fluctuates larger at the samecycle. Moreover degree of irregularity of transverse strain is larger than that ofaxial strain. This shows that deformation and failure of rock is process ofevolvement of small crack. Small crack evolves from even and out-of-orderstatus to heterogeneous and ordinal status.(5) Ultrasonic speed decreases with the number of cycle. The decreasecourse is such: Firstly, ultrasonic speed fluctuates in a steady scope in somecycles; And then ultrasonic speed quickly decreases to a certain more smallvalue; Afterwards in succedent cycles, ultrasonic speed fluctuates about thevalue. That is to say, ultrasonic speed fluctuates and decreases at intervals ofcycles. In deformation process of rock, quantitative change and qualitativechange of its small crack evolvement carry through crosswise.(6) Strength and modulus of rock decrease with exponential function asscale of specimens increases.

同一表觀應(yīng)力下被插国产，局部點(diǎn)應(yīng)變與表觀應(yīng)變相差可達(dá)2個(gè)數(shù)量級成年人视频免费网站，表明宏觀上均勻的巖石是具有細(xì)觀特征的準(zhǔn)脆性材料十八岁禁看的网站，其宏觀力學(xué)行為是細(xì)觀特征相互作用在线观看性爱视频、放大的綜合結(jié)果，而不是簡單的疊加日本一区二区三区精品福利；(4)巖樣軸向應(yīng)變不均勻程度和橫向應(yīng)變不均勻程度隨循環(huán)次數(shù)的增加漸進(jìn)增大99黄片，但是在同一個(gè)循環(huán)內(nèi)，橫向應(yīng)變離散系數(shù)隨應(yīng)力的變化波動(dòng)較大，且同一循環(huán)級別下一级精品片，橫向應(yīng)變不均勻程度大于軸向應(yīng)變不均勻程度免费国产a国产片高清网站，表明巖石內(nèi)部微裂紋的演化是巖石變形破壞的本質(zhì)特征，這一演化表現(xiàn)為微裂紋從均勻無序分布逐漸向非均勻有序發(fā)展国产精品自拍三区；(5)隨循環(huán)次數(shù)的增加在线亚洲综合日本，所有巖樣內(nèi)部超聲波速會(huì)出現(xiàn)衰減欧美性爱2页，衰減過程表現(xiàn)為在某幾次循環(huán)內(nèi)超聲波速在某一相對范圍內(nèi)波動(dòng)日韩黄网站高清观看，然后急劇減小到某一較小值，在隨后的循環(huán)內(nèi)成在线人免费视频一区二区三区，超聲波速又會(huì)保持在這一較小值附近波動(dòng)黄色巨乳，即超聲波速表現(xiàn)為波動(dòng)和急劇減小間隔形式衰減，表明從宏觀看來平穩(wěn)的巖石變形過程久操黄片，內(nèi)部結(jié)構(gòu)演化過程(微裂紋發(fā)展及其相互作用)卻表現(xiàn)為均勻量變和突發(fā)質(zhì)變不斷交叉進(jìn)行的現(xiàn)象95视频网址入口在线观看；(6)巖石強(qiáng)度和彈性模量隨尺度增大呈指數(shù)函數(shù)規(guī)律減小。

Compared with Inverting Input Composite Preamplifier in the commercial QMS,the NIICP can reduce noise by 5%～30% in the 106～107 V/A magnification,and can expand signal bandwidth by 1.8 times and increase MS peak amplitude by 10%～15% in the 108 V/A magnification.

實(shí)驗(yàn)結(jié)果表明：與反相輸入復(fù)合放大器相比影音先锋AⅤ资源夜先锋，同相輸入復(fù)合放大器在106～107V/A放大時(shí)能降低5%～30%噪聲国产猛烈高潮大叫视频，在108V/A放大時(shí)可擴(kuò)展帶寬1.8倍并提高10%～15%質(zhì)譜峰強(qiáng)度。

The magnification times of lateral acceleration tend less obviously with the increase of amplitude, and the whole change shows a mainly linear stage.

墻面板的水平加速度放大倍數(shù)隨振幅增大呈現(xiàn)明顯的遞減趨勢日本免费一级高清大婬片，變化基本上為線性的久久久激情。