变体

Dynamics of mechanical systems with Coulomb friction, stiction, impact and constraint addition and deletion: I theory. Mechanism and Machine Theory.

通过对变拓扑结构系统的动力学建模过程几个关键问题的分析，为进一步建立与完善变拓扑结构柔性多体动力学奠定了基础。

It has been proved by the practice of artificial diamond. The ore-bearing properties of diamond in...

现有资料发明，金伯利岩体上部富金刚石，而往深部品位变贫且质量差，在一个岩管中往往中部富而边部渐贫。

The results show that in the applied load range of 10250 N, the mass loss rate of coated AZ91D alloy can be identified to three stages, which are related with whether the coating is worn out. Abrasion is the main mechanism for the coated alloy. The friction coefficient of the coated alloy during sliding wear appears oscillation before it reaches a constant value, which is close to the μ value of the matrix alloy. The mass loss rate of coated alloy increases slightly with increasing applied load when the applied load is more than 150 N because of high plastic deformation accommodation on the matrix alloy surface.

结果表明：根据载荷大小，涂层处理后AZ91D镁合金的磨损行为明显分为3个阶段，这些阶段同陶瓷层是否磨穿密切相关；微弧氧化涂层AZ91D镁合金的磨损机理主要是磨粒磨损；受表面状况的影响，陶瓷涂层的摩擦因数在 0.20~0.45 间波动；在较高载荷下，涂层被磨穿后，涂层的摩擦因数趋于基体合金的摩擦因数，涂层合金的表面变形能力提高，该阶段质量磨损速率随载荷增加，趋势变得缓慢。

After the functional appliance protruded the mandible, it resulted in a clear alteration in the biomechanical characteristics of the masticatory muscles. The contractile tension of lateral pterygoiod muscles incerased with its contraction time prolonges, while that of the digsstic muscle decreased and shortened.

当功能性矫治器引导下颌前伸后，对运动下颌肌肉作在体等长主动收缩性质的检测，结果表明翼外肌收缩张力增强，收缩速度变慢；二腹肌前腹收缩张力减弱，收缩速度加快。

Results: The expression of MMP-9 in CA tissues was higher compared with normal prepuces (P.01). MVD in CA group was higher than the normal prepuces (P.01). Spearman correlation analysis suggested that the expression of MMP-9 was positively correlated with MVD.

尖锐湿疣(condyloma acuminatum，CA)临床上具有生长快、易复发的特点，少数可在短期内因疣体过度增生而形成巨大型CA，甚至恶变，这可能与MMP-9等的异常表达有关。

Based on the above studies and integrated with aerial radioactivity data, the authors identified and mapped such spectral features of main ore-forming factors of uranium deposits as ore-controlling faults, hydrothermal alterations and plutons, and evaluated geological application potentials of CBERS-02B remote sensing imagery in the Taoshan granite-type uranium deposit.

在此基础上，以江西桃山花岗岩型铀矿田为试验区，结合航空放射性数据，开展了基于02B星遥感数据的控矿断裂带、热液蚀变带及主要成矿岩体等铀成矿要素的光谱特征识别与提取，并对该数据的地学应用潜力进行了评价。

This accords with the model of orthomagmatic genesis for porphyry copper deposit.

而钕同位素则相对稳定，可作为蚀变侵入体岩浆起源的示踪剂。

He taught that the Body of Christ is truly present in the Eucharist, and that the believer partakes of it that the elements are unchanged, and that the Catholic Mass was idolatry.

他告诉我们，基督的身体是真正的，目前在圣体圣事，并认为信奉参与大的，它说，分子不变，并认为天主教弥撒是偶像崇拜。

In the research of visual simulation software development, in order to build the software system model and flow analysis algorithm based on Cross-WLF viscosity model, and realize functions such as pre-processor, solver, parameter regress, data management, graph operations, some advanced software methods as OOSE (Object Oriented Software Engineering) and UML were applied to set up user model, static model and dynamic model of MIM simulation software. These models describe system function, event flow, structure and relation of classes, object interaction, structure of database and I/O file format.

在MIM喂料注射成形性能研究方面，针对毛细管流变仪测试法衡量流动性能的不足，提出使用螺旋线模具测试喂料熔体的注射成形性能，创造性地设计了一套可快换浇口，模腔封闭的螺旋测试模，并在螺旋测试模上采用正交实验设计，得出了高密度重合金喂料流动长度L_m的回归公式，揭示了L_m随Q_m、P_m、△T_m和凡的变化规律，并得出工艺参数对成形性能影响的强度顺序为Qm最大，尸m与△几其次，因而改善喂料流动性能应优先控制注射速率Qm。

Basic characteristics of cosine transform spectrum were analyzed, where contour lines of 2D cosine transform of point mass present the shape of a quarter of concentric circles and the number of counter become small along with the increasing of wave numbers. The spectrum of vertical rectangularcylinder put up periodic zero counters which mark off quadrate areas, the values of counter in each areas alternately change between the plus and the minus, and with the increasing of wave number, the values of counter present attenuation character alike e exponent.

分析了点质量和直立矩形柱体重力异常余弦变换谱的基本特征：点质量二维余弦变换谱等值线呈1/4同心圆形状，等值线随着波数的增大而变稀；直立矩形柱体谱出现了周期性变化的零等值线，该等值线将非零等值线划分为a×b个矩形区域，而且等值线值在各矩形型区域中正负交替变化，随着波数的增大，不同的矩型域中等值线值呈e指数衰减特征。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。