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The Farming-pastoral Zone in North China was separated into 8 Eco-regions according to the known Eco-region. The dissertation analyzed the regional differences of land use changes from three aspects on dynamic degree , land use degree and the change direction (1)On land use dynamic degree, the dynamic degree of the cropland was the highest in North warm temperate deciduous broad-leaved forest and the lowest in temperate forest steppe; forest land's was the highest in alpine meadow and the lowest in warm temperate forest steppe; grassland's was the highest in temperate forest steppe-bunchgrass steppe and the lowest in alpine meadow; other land's was the highest in North warm temperate deciduous broad-leaved forest－the Huang-Huai-hai plain and the lowest in warm temperate bunchgrass steppe.

结合已有的自然生态区的划分，将我国北方农牧交错带划分为8 个自然生态区，选取土地利用动态度、土地利用程度以及土地利用变化方向等3 个方面的指标对研究区进行了区域分异规律的研究，结果如下：（1）耕地动态度北暖温带落叶阔叶林生态区——北部山地丘陵区最大，温带森林草原生态区最小；林地的动态度高寒草甸生态区最大，暖温带森林草原丛生禾草草原生态区——东南森林草原区最小；草地动态度温带森林草原——丛生禾草草原生态区最大，高寒草甸生态区最小；其他用地的动态度北暖温带落叶阔叶林生态区——黄淮海平原区最大，暖温带森林草原丛生禾草草原生态区—西北丛生禾草草原区最小。

In this paper,the B-spline curve is supposed as boundary curves,when they are in two paralled plane and two arbitrary plane,the condition about the control vertex of characteristic polygon when the ruled surface is developable are gained,solved the designing problem of degree and degree B-spline curve .Throughing (2,3) degree and (2,2) degree B-spline ,we haveproved the validity and utility of this method.

本文用两条B样条曲线作边界曲线，当它们位于两平行平面上和两任意平面上时，研究得到了由它们形成的直纹面为可展面时它们的特征多边形顶点满足的条件，解决了(n，n+1)次和次可展B样条曲面的设计问题，然后以(2，3)次和(2，2)次B样条曲面为构造实例，证明了该算法的正确性和实用性。

In the fifth part, the author make analysis on how multiply dimensions such as degree of coerciveness, degree of directness, degree of automaticity, degree of visibility make influence on value orientation, and do policy instruments choice on real practice.

先是从强制程度、直接程度、自治程度和可见性程度的几个维度论述其对价值取向的影响，再用这些结论分析具体的政策工具选择。

The degree and direction of rotation greatly affect the students' performance ; the passing rate of 90 degree items is better than that of 180 degree items , the passing rate of 180 degree items is better than that of 360 degree items, and the passing rate of right-rotation items is better than that of left-rotation items. Furthermore, handedness also affects the students' performance; the performance of right-handedness is better than that of left-handedness; right-handed students show an significant advantage over left-handed students on the items of left rotation, but no significant advantage on the items of right rotation.

四、空间旋转游戏经验的多寡，与学童的测验表现有著高度的正相关；而二度空间旋转的表现显著优於三度空间旋转；又旋转角度与旋转方向均显著的影响学童的表现，旋转角度愈大，答对率愈低，向右旋转试题优於向左旋转试题；另外，手利亦显著影响学童的表现，右手利优於左手利，右手利学童在向左旋转的测验表现上，显著优於左手利学童；但在向右旋转试题上，则无显著差异。。

Present the rebounding ratio, and analyse the relationship of degree of slope,rebounding value and stability, point out that rebounding ratio is a important factor of effecting the stability of slope, and discuss the relationship of lumpiness ,rebounding value ,rebounding ratio, JRC ,height of slope and the degree of slope, confirm the influencing degree of all kinds of factors to the degree of slope, and the order is lumpiness,rebounding value,rebounding ratio,JRC and the degree of slope.

提出了回弹比，分析其与坡度、稳定性间的相关关系，指出回弹比是对边坡稳定性影响的一个重要因素。确定了各因素对坡度的影响的重要性依次是块度、回弹值、回弹比、JRC和坡高。

Two above methods are generalized to tensor product Bézier surfaces and triangular Bézier surfaces, we give two approaches of degree reduction for tensor product Bézier surfaces, each of which reduces a given degree n×m tensor product Bézier surface to a n〓×m〓 one, and two methods of degree reduction for triangular Bézier surfaces, which reduce a given degree n triangular Bézier surface to a degree m one. The explicit formulas of control points for reduced tensor product and triangular Bézier surfaces are obtained respectively.

张量积Bézier曲面的两种降阶方法均可把n×m阶张量积Bézier曲面一次降阶为n〓×m〓阶张量积Bézier曲面；三角Bézier曲面的两种降阶方法均可把n阶三角Bézier曲面一次降阶为m阶三角Bézier曲面，并给出降阶张量积Bézier曲面和降阶三角Bézier曲面控制顶点的显示表示式。

In 300mg/kg JSS treatment, the yolk color was 6 degree too. While added 500mg/kg JMH into the basal diet, the egg yolk color was up to 9 degree. Supplement of oxytetracycline + JMH or chlortetracy dine + JMH in the basal diet, the egg yolk color was up to 8 and 6 degree respectively and decreased one and three color unit respectively than that of JMH treatment. Added oxytetracyclimne + JSS or chlortetracycline + JSS, the egg yolk color was up to 8 and 6degree respectively. When added arsanilic acid + JSS, the egg yolk color was up to 7 degree and improved one color unit than that of JSS treatment. When added arsanilic acid +JMH to basal diet, the egg yolk color was up to 8 degree and decreased one color unit than that of JMH treatment.

饲料中添加300mg/kg的金闪闪，蛋黄颜色也是6级，没有产生增色效果，添加500mg/kg的加美黄，可使蛋黄颜色达到9级，提高3个比色单位，土霉素与加美黄配合使用，蛋黄颜色为8级，比加美黄组降低1级，金霉素与加美黄配合使用蛋黄颜色为6级，比加美黄组降低3级，土霉素与金闪闪配合使用可使蛋黄颜色升到8级，比金闪闪组提高2级，金霉素与金闪闪配合使用蛋黄颜色仍为6级，阿散酸与金闪闪配合使用，蛋黄颜色为7级，比金闪闪组提高1级，阿散酸与加美黄配合使用蛋黄颜色为8级，比加美黄组降低1级。

The results showed that (1) The grain size of nanometer YiO_2 was40～80nm.The wavelength corresponding to the maximum absorbency values were observedin the 200～320nm range.The crystal structure of carbon doped TiO_2 photocatalyst is primarilyanatase(22.43% rutile), and the content of carbon is about 4.6%.(2) The relative humidityvaring from 8% to 80%, the photocatalytic degradation degree of benzene increased withincreasing relative humidity; and to toluene, degradation rate was hanced by relative humidityup to 60%, and more or less inhibited above 60%.(3) Scheme and results of orthogonal testswere used by evaluating the photocatalytic performance of the gas phase methanol, acetoneand 1-heptane.The results revealed that their degradation degree reached 84.5%, 93.39% and93.45%, respectively.(4) The 254nm UV lamp showed higher photocatalytic degradation rate.For methanol, acetone and 1-heptane, it was found that photocatalytic degradation reactionoccurs with the light strength of daylight lamp.(5) Under the the same conditions, 15%degradation degree has been obtained for benzene, whilst about 10% degradation degree wasattained by Degussa P25; During the initial phases, the toluene revealed higher photocatalyticactivity, comparing with Degussa P25, the degradation degree of methanol, acetone and1-heptane were slightly lower.

结果表明：(1)CVD法制备的纳米TiO_2光催化剂，颗粒球形度好、粒径在40～80nm之间；最大吸光度值所对应的波长为200～320nm；含碳量约为4.6％；晶型组成主要为锐钛矿型，金红石的含量约为22.43％；(2)在相对湿度为8％～80％范围内，苯的光催化降解率随着相对湿度的增大而增大；甲苯在相对湿度为60％时达到最好降解效果，当相对湿度增大到80％时光催化效果降低；(3)将正交实验设计及实验方案应用于气相甲醇、丙酮和正庚烷光催化降解研究，实验结果表明：三者最高降解率分别为84.5％、93.39％和93.45％；(4)有254nm紫外灯参与的光催化实验可以大大提高有机气体的光催化降解率；在日光灯的照射下，掺碳纳米TiO_2对气相甲醇、丙酮和正庚烷具有一定的光催化氧化能力；(5)较P25粉，在相同的光催化操作条件下：气相苯的平均降解率达15％，高于P25粉10％的降解率；气相甲苯在初始阶段具有较高的反应速率；气相甲醇、丙酮和正庚烷的降解率略低于P25粉。

Onlay island flap group were 2 - 10 years old, with an average age of 4.72, including Ⅱ degree 22 cases, and m degree 2 cases, all were primary surgery; Snodgrass group were 2 - 13 years old, with an average age of 4.76,Ⅱ degree 36 cases,Ⅲ degree 3 cases, IV degree 1 case, 37 were primary surgery, 3 were repeat surgery.

其中Ⅱ度22例，Ⅲ度2例，均为初次行尿道成形术者；Snodgrass术组年龄2～13岁，平均4、76岁，其中Ⅱ度36例，m度3例，Ⅳ度1例。37例为初次行尿道成形术者，3例为初次尿道成形术失败，再次行尿道成形术者。

Mainly be applicable to and arrange tidy, the lightly mid-degree tooth body of quality integrity changes countenance, whole the tooth light degree arrive mid-degree fluorine spot tooth, whole the tooth light degree four wreaths plain tooths, individual the tooth changes countenance, because the age increases the tooth color that the dentine change causes and delivers Huang and wants to become more white healthy buff tooth, heavy degree four wreaths plain tooth enamels sticks a noodles creation the bleach of front can make and whet in addition to of tooth quantity decrease, the effect is better.

主要适用於排列整齐、质地完整的轻中度牙体变色、全口牙齿轻度到中度氟斑牙、全口牙齿轻度四环素牙、个别牙齿变色、因年龄增长牙质改变引起的牙色发黄，想变得更白的健康浅黄色牙齿、重度四环素牙瓷贴面制作前的漂白可以使磨除的牙齿量减少，效果更佳。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。