JS 12.7mm sniper rifles capable of launching 84 tungsten-type heart 12.7mm armor piercing shell, the shell warhead quality 28g, the diameter of tungsten alloy shells Heart 8mm, a mass of 22.5g, muzzle velocity 1150m / s, chamber pressure 324MPa, 1000m distance can be run through the thickness of 45 ° tilt of 15mm steel plate.

JS 12.7mm狙擊步槍可發(fā)射84式12.7mm鎢心脫殼穿甲彈亚洲三级乱伦一区二区，該彈彈頭質量28g，鎢合金彈心直徑8mm波多性爱视频，質量為22.5g717电影网午夜福利理论片狼牙电影网，初速1150m/s，膛壓324MPa国产高潮白浆调教福利在线视频，1000m距離上可貫穿厚度15mm傾斜45°的合金鋼板老司机午夜免费精品视频在线观看。

In this paper, we analyzed the firing results in one 57H Gun with six different ignition al structure such as igniter in bottom, centre ignition tube closed by computer typing paper,and so on at conventional and low temperture condition.

密實火藥床的點傳火技術研究李鋒，張振鐸（華東工學院工程熱物理系南京210014）關鍵詞：點傳火永久无毒在线观看你懂的，燃燒337啪啪肉体，裝藥一、引宮火炮在不同環(huán)境下射擊的彈道性能變化很大能看的黄色网站福利，一般線膛炮在十50&C—一40&C范圍內欧美也操也射视频，勝壓變化40％以上，初速變化10％左右欧美体内she精高潮。

This study is using LS-DYNA3D explicit finite element software to investigate that the head-cervical spine model with/without the helmet model, impact to the plane of ±15° angel in 3.2m/s, and to observe the cervical spine and head kinematics, to analyze the stress of vertebras and disc.

本研究應用LS-DYNA3D顯式有限元素軟體亚洲性交性爱网，使用完整的頭-頸椎模型分成有無佩帶安全帽部分，以初速3.2m/s模擬撞擊角±15°時www.madouav，頸椎的動態(tài)反應久久精品视频官网，觀察頸椎與頭部的運動，分析椎體與椎間盤的應值劲爆欧美中文字幕精品视频。