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Five main stalk crops planted in northern China including wheat, corn, broomcorn, soybean, and millet, were chosen to be the samples of the experiments. About seven morphological traits (such as plant height, ear length, ear weight, moisture content and so on) were measured in the crop mature period. The maximum shear force during shearing process, through static test equipment, at the second internode of the basal stalk, was recorded. And shear strength of each crop was calculated to find the differences of shear strength among different crops. The optimal regression models of shear force and morphological traits were obtained by multiple linear regression method with Statistics Analysis System. The equation based on the regression models was constructed.

本文以北方主要茎秆作物（小麦、玉米、高粱、大豆、谷子）为研究对象，试验测定了成熟期茎秆基部第二节间的最大剪切力及株高、穗长、穗重、含水率等七种形态特性指标，获得了静载情况下相关样本的剪切强度；分析比较了不同茎秆作物剪切强度的差异性，并利用SAS软件对茎秆作物剪切力与形态特性指标进行了多元线性回归，得到了剪切强度对形态特性指标的最优回归方程。

QDCSM can explain the properties of nuclear force quanlitatively, but can not reproduce the precise properties of the deuteron. The main reason is that the long-range of the interaction decays more rapidly than the real nuclear force.

QDCSM能定性的解释核力，但是单道和道耦合的计算发现不能很好描述氟核这个束缚态的种种精细性质，主要是长程相互作用比实际核力衰减得快。

The company has strong technical force and give full play to the talent and technical force, actively promote the GPS, GIS as the main body of spatial information technology industry and marketization.

公司拥有雄厚的技术力量并充分发挥人才和技术力量，积极推动以GPS、GIS为主体的空间信息技术的产业化和市场化。

Applying combined method of quantitative analysis and qualitative analysis, on the basis of on ago research fruit, this paper firstly analyses main factors that affect the safe distance from friendly force to target for tank gun overhead firing systemically. Based on that, this paper builds math model of calculating the safe distance from friendly force to target separately aiming to the difference of tank gun overhead firing in plane and undulate terrain. At last, through applying Mathematica soft, this paper presents the safe distance from friendly force to target for a tank gun overhead firing used APFSDS, HEAT and HESH, combined qualitative analysis.

采用定量分析和定性分析相结合的方法，在以往研究成果的基础上，首先系统地分析并提出了影响坦克炮超越射击时友军至目标安全距离的主要因素；以此为基础，针对平坦地形和起伏地形上坦克炮超越射击的不同情况，分别建立了确定友军至目标安全距离的数学模型；最后通过运用Mathematica软件进行定量计算，并结合定性分析，提出了某型坦克炮使用尾翼稳定脱壳穿甲弹、空心装药破甲弹和杀伤爆破榴弹进行超越射击时友军至目标的安全距离。

Secondly, from natural factors and human factors, by meanings of method such as grey relation analysis and main component analysis so on, it revealed driving force of groundwater environment evolution. And also it showed that climate change is the main influence factor in pediment plains, however, human activities is the main one in the clay plain zone.The third achievement is about evolution forecast on groundwater environment.

从自然因素与人类活动两方面，采用灰色关联分析、主因子分析等方法，揭示了盆地地下水环境演化的驱动力，其中盆地南缘山前平原地下水环境受气候变化影响较大，细土平原主要受人类活动影响；三是地下水环境演化趋势预测。

The main research content is: Using the experimental of cutting force and roughness of high speed face milling cutter and high speed end milling cutter mill aluminium alloy and cast iron, analyze the rules of the high speed milling velocity, feed rate per tooth, milling depth and milling width to high speed processing. Use multiple linear regression method, set up surface roughness and the cutting force fluctuation models. Certify the regression model notability, and provide a reliable guarantee for the accuracy of function optimization. Based on the targets of productivity, manufacturing cost, surface roughness, cutting force fluctuation optimization model, according to research of the high speed milling parameters selecting restrict of work piece, machine, tool and safety, set up high speed milling parameters multi-object optimization system.

本文以已有的高速铣削机理及高速刀具技术研究成果为基础，结合高速铣削试验，进行了基于遗传算法的高速铣削参数优化研究与系统开发，主要的研究内容为：通过高速面铣刀和高速立铣刀加工铝合金和铸铁等材料的切削力和表面粗糙度试验，进行了铣削速度、每齿进给量、铣削深度和铣削宽度对高速铣削加工过程影响的研究；采用多元线形回归的方法，建立了切削力及其振幅和表面粗糙度模型，并对模型的显著性进行验证，为高速铣削参数优化模型的建立奠定了基础。

Pilot-type relief valve as shown in Figure 4-18, mainly from the main valve and pilot valve composed of two parts, the main feature is the use of the main valve, balance piston, the next two cavity fluid pressure difference and the spring force balance.

先导型溢流阀如图4-18所示，主要由主阀和先导阀两部分组成，其主要特点是利用主阀，平衡活塞上、下两腔油液压力差和弹簧力相平衡。

The paper describes how the local force of the main web is considered as the force caused by the Contact pressure among the trolley wheel, rail and top flange, and how the contact analysis model for the local force is built by means of both Hertz theory and finite element software ANSYS combined. Also, it analyzes the variation of the local stress under the different conditions and comes to a conclusion, and compares the results derived from the experimental formula with the result from ANSYS.

本论文的主要内容：将Hertz接触理论和有限元软件ANSYS结合起来，把主腹板的局部受力问题视为小车轮与轨道及轨道与上翼缘板之间发生接触行为作用下的受力问题，建立了小车轮压作用处偏轨箱形梁主腹板局部受力的接触分析模型，研究不同情况（小车轮压、箱形梁几何参数和轨道截面惯性矩）下局部应力的变化规律，得出相关结论；最后将经验公式解与ANSYS数值解进行对比分析论证。

The hanging strip device includes: a hanging strip device main body; a winding section for performing the winding of the hanging strip; a winding auxiliary section, which is configured at a state that the rotation relative to the hanging strip device main body is limited and can move between the first preset position and the second preset position relative to the winding section, wherein, at the first preset position, the rotation of the winding section makes the hanging strip wrap is restricted, at a second preset position, the winding section can perform the drawing-out rotation for drawing out the hanging strip; a force applying part, which applies a press pressure to make the winding auxiliary section at the first preset position; and a convex part which allows the winding auxiliary section to be at preset point contact status relative to the hanging strip device main body when the winding auxiliary section is at the first preset position.

置在该吊带装置主体内，而且能够在第一预定位置和第二预定位置之间相对于上述卷绕部移动，其中，在上述第一预定位置，上述卷绕部的使上述吊带回绕的旋转被限制，在上述第二预定位置，上述卷绕部能够进行用于抽出吊带的抽出旋转；施力部，其施加将上述卷绕辅助部按压向上述吊带装置主体的按压力，以使该卷绕辅助部处于上述第一预定位置；和凸起部，其设置于上述卷绕辅助部或者上述吊带装置主体的任一方，在该卷绕辅助部处于上述第一预定位置时，上述凸起部使该卷绕辅助部相对于上述吊带装置主体成为预定的点接触状态

The wash-out of the particle slope, in practice is how the particle stone to move under the breaking wave"s force. The main elements deciding the force are the wave factor, the slope angle and the particle size. Through analyzing the particle"s suffering process during each stage of waves breaking, it can be advanced that the wave force is biggest just at the wave incidence to the slope.

波浪对散体边坡的冲刷，实际上是颗粒在波浪作用下的受力起动问题，力的大小主要由波要素、斜坡倾角和颗粒粒径决定，且通过对破波各阶段颗粒的受力分析，可知颗粒在破波瞬间受到的作用力最大。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。