不变化

For the problem of the ratio of inner to outer diameter of long tube, according to the "residual core" in the target plays an important role in DOP of long tube penetrator, the analytical model of long tube pentration in semi-infinite homogeneous steel target is established and calculated to devide three kinds of different scopes, the rule of varied by the ratio of inner to outer diameter is analyzed. The patterns of penetration of the yawed tubular against a normal homogeneous semi-infinite target is established, the size and direction of "residual core" is analyzed, under the different impact yawed, the regularity of variations in the yawed of the tube and depth of the penetrateion is described during the penetrateion against the plate.

二是对于长管体的不同内外径比，依据长管体时形成的中间&靶芯&是其侵彻机理不同于长杆体的重要因素，分三种情况建立了长管体对半无限均质靶板的简化理论模型，并进行了分析，得出了穿深随内外径比变化的规律；描述了带攻角长管体垂直侵彻半无限厚靶的物理图像，分析了&靶芯&力的大小和方向，建立了侵彻简化模型，给出了在不同的初始攻角条件下，管体在侵彻过程中攻角和穿深的变化规律。

The polymerization of preparing PDA could be impacted by allyl chloride, allyl alcohol and allyl aldehyde. The content of allyl chloride, allyl alcohol and allyl aldehyde in the DMDAAC monomer solution varied from 0mg/kg to 1000mg/kg, their intrinsic viscosity of PDA descended from 10.3dL/g to 8.0dL/g, 6.8dL/g and 8.8dL/g respectively. The polymerization of preparing PDA could be carried out well in the case the content of NaCl, active carbon, yellow residua and low molecular polymer of DMDAAC were less than 10000mg/kg, 1000mg/kg, 1000mg/kg and 50000mg/kg respectively.

单一杂质含量变化对聚合产物PDA特征粘度影响的研究结果表明：在DMDAAC单体溶液聚合反应过程中，当Fe~(3+)、Fe~(2+)和Cu~(2+)含量分别达到7mg／kg、9mg／kg和5mg／kg时无法得到聚合产物PDA胶体；当烯丙基氯、烯丙醇、烯丙醛含量分别从0mg／kg增加到1000mg／kg时，聚合产物PDA的特征粘度从10.3dL／g分别下降到8.0dL／g，6.8dL／g和8.8dL／g；活性炭和黄色物质含量在1000mg／kg以下，低聚物含量在50000mg／kg以下以及氯化钠含量在10000mg／kg以下时产物PDA的特征粘度降低变化量不超过0.2dL／g。

The curvature radius and vehicle speed effects were analyzed based on the dynamic amplification factor of a curved-bridge considering the traveling eccentricity of vehicles.

内力和位移的动力放大系数对曲率半径的变化的敏感性各不相同，当曲率半径小于某个特征值后，动力放大系数变化很大。

Finally the investment in the course of convertible bond investment is studied. There is evidence that the market behavior of convertible bonds is much better than the stocks and bonds. Owing to the inconsistency of the price change between the stock and the convertible bond, by analyzing the change of conversion premium rate, the arbitrage can be realized in incomplete market. But investors must bear the price risk due to the trade system.

最后论文对可转换债券投资过程中的投资活动进行了研究，实证发现可转换债券的市场表现优于债券和股票；同时基于股价与可转换债券价格的变化不一致性，通过分析可转换债券的转换溢价率的变化，在无卖空市场中同样可以进行套利，只是投资者要承担由于交易制度造成的价格风险。

From the point of microstruction,bamboo volume fraction of bundlesheath,single bundle sheath area,fiber width,cell wall thickness increase withthe growth of age,fraction of cell wall changes like density,increases with thegrowth of age,the 2 age-degree bamboo is the biggest.The reason why 2 age-degree fraction of cell wall more than 3 age-degree bamboo is the former has thegreater fraction of parenchyma;1 age-degree bamboo has the greatest fiberlength,fiber length and width ratio and vessel length.The difference in bamboofiber length,vessel length and width among other age-degrees is not distinct.

从构造角度来说，竹材的纤维束比量、单个维管束纤维束面积、纤维宽度、胞壁厚度随着年龄的增大而增大，胞壁率随年龄变化规律与密度相似，随年龄增大而增大，以2度竹最大，2度竹胞壁率比3度竹大主要由于薄壁组织比量较大所致；纤维长度、纤维长宽比、导管长度以1度竹最大，其它年龄纤维长度、导管形态变化不明显。

Rotational modes are independent of the transverse support stiffnesses of the carrier, ring gear, and sun gear. Translation modes are similarly independent of the rotational support stiffnesses. Large contact ratio do not mean lower mesh force. If either the number of sun or ring gear is not multiple of planet gear, system will run effectively, with lower impaction of tooth mesh in and out.

研究表明：扭转支撑刚度的变化影响系统的转动模态，径向支撑刚度的变化影响系统的位移模态；齿轮间重合度大并不等于轮齿间的受力情况好；行星轮与内齿圈齿数不为行星轮个数的整数被时，轮齿的啮入、啮出对系统的冲击小，系统的效率高。

Comparison of the same Southwest monsoonal climate areas and the same study period with Dongge Cave and Kahf Defore Cave in δ18O values, the tufa core of δ18O in Huanglong is higher extent than these of Cave records, which altitude effect and different removal of moisture source regions maybe lead to extent difference in δ18O values; and we can draw a conclusion the tufa core records of Huanglong in the high altitude and middle latitude areas is more sensitive respond to climatic environmental changes than records of stalagmites in Dongge Cave and Kahf Defore Cave from the low altitude areas.

同属西南季风区、由于海拔效应和距离水汽来源远近不同等因素的影响，在同时段内黄龙钙华δ18O 的变化范围和变化幅度都比董歌洞和Kahf Defore 洞的δ18O记录要大，说明处于中纬度、高海拔的黄龙钙华相对于低海拔的董歌洞和Kahf Defore洞石笋对气候环境的响应可能更加敏感。

Because mechanical finger's outflow boundary change has the limitation, this kind of jig may clamp the work piece which takes also correspondingly to have the similar surface, simultaneously as a result of mechanical finger's quantity which installs is limited, but the jig itself does not replace, finger's outflow boundary change was not also big, causes the capture strength not to have the very big compatibility.

由于机械手指的外缘变化具有局限性，这种夹具可以夹取的工件也相应的必须具有类似的表面，同时由于安装的机械手指的数量有限，而夹具本身并不替换，手指的外缘也变化不大，导致了抓取力也不具有很大的适应性。

The result is that amplifier output is unaffected by loading, so that the frequency-variable impedance of loudspeakers does not give an equally variable frequency response, and there is some control of speaker cone resonances.

结果是，放大器输出不受负载的影响，因此音箱的频率变化的阻抗并没有提供一个一样的频响变化，没有扬声器纸盆共鸣。

The average linewidth enhancement is the latent physical attribute of SOA that is the groundwork to investigate the OSP based on cross phase modulation of SOA.

平均线宽增强因子是SOA的本征物理属性，它不随输入信号的改变而改变，而器件有效线宽增强因子则是系统相关的，它决定了脉冲的相位变化和增益变化的关联度，是研究基于SOA相位调制效应的光信号处理问题的基础。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。