弹

First of all, the physical properties of plastic projectile body influencing the motion of pro- jectile are analysed in this paper which depends on the test results.

本文以实验结果为依据，首先分析了塑料弹体影响弹丸膛内运动的物理性能，然后结合旋转弹丸的膛内运动特征，经过模拟试验，采用数学拟合法，初步建立旋转稳定弹塑料弹体工程设计计算的数学模型(包括结构尺寸设计计算、强度计算和内弹道计算)。

The user is complained, always receive what Google sends to shoot ad giving form, google published an announcement then, saying to shoot ad giving form is " rebarbative ", if the user was received,shoot ad giving form, they are not sent by Google, cause by the applied process of tripartite however.

有用户投诉，总是收到Google发送的弹出式广告，Google于是发表了一份公告，称弹出式广告是"令人讨厌"的，假如用户收到了弹出式广告，它们并不是由Google发送的，而是由第三方的应用程序引起的。

The details contents in this paper are as follows: 1 Studied the theory analysis of the causation of ricochet phenomena.

针对动能弹斜侵彻混凝土靶时的跳弹现象，本文分别采用理论分析方法和数值模拟方法对这种特殊现象进行了分析计算，具体的研究内容如下： 1）进行了跳弹现象产生原因的分析研究。

Results show that , be compared with the traditional meshing scheme of sabot, after adopting the new scheme, the stress of the dangerous tooth surface of back push sabot can decrease at least 30% and at least 13% of the front push sabot.

结果表明，与传统弹托的啮合方式比较，采用新的啮合方案后，后推式弹托危险齿根面的最大等效应力值减少了30%以上，前推式弹托危险齿根面的最大等效应力减小了13%以上。

Description :A shotgun shell is a self-contained cartridge loaded with shot or a slug designed to be fired from a shotgun.

为霰弹枪补充 8 发弹药。描述：霰弹枪弹药是一种通过填装在霰弹枪发射的单发弹药。

The present invention relates to a nano-bullet-proof tires made of solid environmental protection methods, specifically the use of a nano-materials, renewable sources of rubber, rubber material dispensed through a series of processing, made of "nano-rubber in solid matrix""Matrix" outside "bullet-proof body", through the composite adhesive, bonding, in a plastic bag,"Nano polyurethane tread", made of "nano-bullet-proof tires solid environmental protection."

本发明涉及一种纳米防弹环保实心轮胎的制成方法，具体讲是一种利用纳米材料、再生橡胶、橡胶料的配发，经过一系列的加工，制成"纳米橡胶实心内胎体"，在"内胎体"外设置"防弹体"，通过胶粘剂的复合、粘接，在包胶一层"纳米聚氨酯胎面"，制成"纳米防弹环保实心轮胎"。

There is also disclosed and claimed a chain of individual projectiles connected head to tail by complementary spigot and socket members.

本发明还公开并且要求保护一种由单独的射弹形成的射弹串，这些单独的射弹通过互补的插销和插座构件首尾连接起来。

This article mainly simulates gradually damage destruction process of rock, major in determinationg the definition of rock three-dimensional damage tensor, simplify to the damage tensor and obtain its engineering calculation method, and obtains the basic expression form of equivalent stress by equivalent stress assumption, symmetrization to the actual stress, thus obtains construction relation of the festival principle of three-dimensional damage rock mass, finally couples elasticity- plasticity with damage in the finite element equation, with reference to elasticity-plasticity gradually degenerated method thought, simulates rock damage to advance gradually the destruction process in finite element method, draws up elasticity - plasticity and damage coupling two-dimension finite element procedure with the C language in the VC contact surface, by simulating experiment destroyed process, acquires destruction image and the axial load distortion curve of model, agreement with the experimental result.

本文主要模拟岩石渐进损伤破坏过程，确定岩石三维损伤张量的定义，对损伤张量进行简化计算并得出其工程计算方法，采用等效应力假设得出有效应力的基本表达形式，对有效应力进行对称化，得出节理损伤岩体的三维本构关系，在有限元方程中实现弹塑性和损伤耦合；借鉴弹塑性渐进退化方法的思想，采用有限元的方法模拟岩石损伤渐进破坏过程，用C++语言在VC界面编制了弹塑性和损伤耦合的二维有限元程序，通过模拟已有的实验破坏过程，得出模型的破坏图像和轴向荷载变形曲线，与实验结果基本一致。

Inelastic torsional response due to strength distribution was studied according to the results of three-dimensional nonlinear time-history analysis.

通过弹塑性时程分析，得到了强度分布控制弹塑性扭转的作用机理，得到了质量偏心体系和刚度偏心体系强度分布影响弹塑性扭转反应的规律。

In the second chapter several new concepts of elasto-plastic fuzzy stiffness and element are proposed. The fuzzy element matrixes corresponding to the elasto-plastic fuzzy element are also established. In order to use the bilinear and trilinear restoring force modles on analysis seismic responses of structures. A fuzzy mathematical method for dealing with the critical points of the restoring force curve is proposed too.

第二章针对结构在地震弹塑性分析中的刚度模糊性，提出了模糊刚度的概念，并进一步对平面和杆系的弹塑性问题提出了弹塑性模糊单元的概念，建立了相应的模糊单元刚度矩阵；为了利用现有的折线恢复力模型，并且更好地反映结构刚度的过渡性，还给出了用模糊数学处理折线恢复力模型刚度折点的方法。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。