弹

Secondly, a theoretical dual rigid-plastic modal under lateral impact of blunt indenters is firstly developed in order to predict damage pipeline which is fully clamped across a span based on rigid-plastic beam on a perfectly plastic foundation, which is made up of a rigid-plastic sub-beam and a rigid-plastic basic-beam, the rigid-plastic sub-beam is used to predict denting deformation, the rigid-plastic basic-beam is used to predict global deformation, the sub-beam and the basic-beam interact by a perfectly plastic foundation.

为了更好地估计钝头弹体冲击对管道造成损伤，在刚塑性地基梁模型的基础上，首先提出了一种新的理论计算模型一双重刚塑性梁模型，由一子梁和一基梁构成，子梁用来估计弹体撞击造成的局部损伤，基梁用来估计弹体撞击造成的整体弯曲，子梁和基梁通过基础反力相互作用。

This paper establishes a mathematical model of melt-lubrication between band and gun tube with oil on the bore interface.

该文就火炮内膛涂油条件下，弹丸在膛内高速运动中的弹炮接触熔化进行了分析，建立了涂油条件下的弹炮接触熔化热流体模型，进行了数值计算，计算了弹带熔化速度和厚度及其对弹丸摩擦系数的影响，结果与实验值吻合较好。

The application status of high performance engplastics such as PA,PC,PTFE,MPPO,PSU and FRP in ammunition part s including sabots,shell,gas check ring,ammunition case,shell body at home and abroad are presented in detail.

详细介绍了国内外高性能工程塑料如聚酰胺、聚碳酸酯、聚四氟乙烯、改性聚苯醚、聚砜、纤维增强塑料等在弹托、弹带、闭气环、药筒、弹体等多种弹药部件上的应用情况，分析了未来应用发展的趋势，提出了发展其应用的几点建议。

On my OD ripstop Force 10s, the one in the middle was about 7" deep and would accomodate a 30-round M4 magazine, and the ones to each side of it were 4.5" deep, sized just right for .45 single stack magazines (they were too tight for my 9mm mags).

在我的 OD 绿防刮布 Force 10 上，中间那个隔袋深约 7 英寸，可以放入一个 30 发的 M4 弹匣，两边的隔袋深 4.5 英寸，在尺寸上刚好可以放入 11.43mm 的单排弹匣（放我的 9mm 弹匣就太紧窄了）。

Marguerite, with on hand resting on the piano, looked at the score, her eyes following each note which she accompanied in a soft singing voice and, when Gaston reached the passage which she had mentioned, she hummed it and played it with her fingers on the back of the piano:'Re, mi, re, doh, re, fa, mi, re...that's the part I can't get.

当加斯东弹到她讲过的那一节的时候，她一面在钢琴背上用手指敲打着，一面低声唱道：&r 、mi、r 、do、r 、fa、mi、r ，这就是我弹不下去的地方，请再弹一遍。&

The study shows that the effect of Young's modulus is largest, then hardening coefficient, initial yielding stress, hardening exponent and anisotropy r0 . While the effects of anisotropies r4 5 and r9 0 variation can be ignored.

研究结果表明，杨氏模量的波动对板料回弹量的影响最大，其次分别为硬化系数、初始屈服应力、硬化指数及各向异性系数r0的波动，而各向异性系数r4 5及r9 0的波动对板料回弹量的影响可忽略，且数值模拟分析材料参数对板料回弹量的影响趋势与理论分析一致。

The electric capability test of projectiles is very important to the research and development of new types of projectiles.

电气系统性能测试是新型弹药开发和研制过程中一项非常重要的工作，它包括对各种弹载电子设备的测试和综合指标的评估，能够评判弹载电子设备是否能够上弹总装和进行实弹试验。

Three calculation example are used in this thesis, they are 122mm-missile bullet,250kg aviation bomb and a glide bullet with I,II two models.

通过对比两种型号的滑翔增程弹计算结果，分析了来流马赫数、攻角和弹翼对滑翔增程弹气动特性影响。

Basing on ice formation rate of AgI at different temperatures after "37" anti-aircraft shell exploding, multiple relationship of two gradient temperature, as well as exploding time, angle, vertical height, contour interval and slanting distance of anti-aircraft artillery 83 rainfall bomb, the ideal dissemination radios and launch angle of ideal density were calculated, and the suitable bullet number and operating method were analyzed, for the purpose of using reasonable method of firing and the least person rain ball to achieve best precipitation enhancement effect.

利用&三七&高炮炮弹爆炸后AgI在不同温度下的成冰率及前后2个温度梯度倍数关系，以及高炮83型增雨弹引信自炸时间和射角及其所达垂直高度、水平距离、斜距等资料，计算出理想浓度的理想弥散半径和发射角度，从而分析得出在人工增雨作业中适宜的用弹量和作业方法，以期利用合理的射击方法，使用最少的人雨弹，达到最佳的增雨效果。

Optional hand armaments: 90mm machine gun, clip-fed, 20 rounds per clip

可选手持武器：90mm机关枪，弹夹供弹，每只弹夹20发

They weren't aggressive, but I yelled and threw a rock in their direction to get them off the trail and away from me, just in case.

他们没有侵略性，但我大喊，并在他们的方向扔石头让他们过的线索，远离我，以防万一。

In slot 2 in your bag put wrapping paper, quantity does not matter in this case.

在你的书包里槽2把包装纸、数量无关紧要。