The gauze disc ( 6 ) serves to hold the coiled wick tightly against the fuel charge , while the back plate ( 10 ) protects the washer 纱网盘( 6 )用于保持导火索盘紧靠燃料块，后盘( 10 )用于保护垫圈。
The combination of this backing plate , the specially engineered buffing pads , and the cut & polish cream … all work synergistically to produce swirl - free , world class results 抛光底盘的构成有专业的工程用的抛光护垫，切割和抛光剂. . . . .所有的部分都是为产生无螺旋纹、世界级效果的。
The pad - lock ? washer system has been improved by incorporating the convex pivot adjustment into the backing plate ; thus allowing for the reduction in the number of washers needed to achieve all spacing requirements 垫板锁垫圈?系统已得到改善，纳入凸枢轴调整到底板;从而使人数减少后的垫圈，以实现所有间距要求。
A slot was cut in the back plate of the double - foil shield to improve the flow field with air diversion method . the flow field and droplets trajectory near the shield are simulated in wind tunnel by fluent software to analyze the wake flow affecting the spray drift . from simulation , the improved shield spray in reducing drift is better than double - foil shield spray and conventional spray in six types of wind velocity 本文采用导流法在双圆弧罩盖上开口，利用fluent模拟分析和比较罩盖喷雾流场，并模拟该流场下的雾滴运动轨迹来分析雾滴的飘失性，模拟结果表明：结构改进后的罩盖喷雾流场得到改善，其减少雾滴飘失的效果好于原罩盖，更优于常规无罩盖喷雾。
They are applied to different situations and verified by experiments . analysis model of small ap oblique penetrating ceramic / metal light armor is established on the basis of energy model and the assumption of ellipse absorbing the same energy in back plate , giving the predictable formula about ballistic limit velocity . with energy model the optimization design in relation to ceramic / metal light armor is analyzed and the optimal coefficient of ceramic / metal composite armor is gained 本文的主要研究内容如下： (一)建立了小型穿甲弹垂直侵彻陶瓷/金属轻型装甲的动量模型和能量模型，它们分别适用不同情况，并通过试验验证；基于能量模型和背板椭圆吸能相同假设，建立了小型穿甲弹斜侵彻陶瓷/金属轻型装甲的分析模型，给出了弹道极限速度预测公式；利用能量模型对陶瓷/金属轻型装甲的优化设计进行了分析，给出了陶瓷/金属复合装甲的最佳优化系数。
