However the machining of light - composite armor material is still a dead - hand problem to be resolved, and so, this dissertation analyses and researches the mechanical - physics performance, the tissue - structure characteristics and the machining mechanism of light - composite - armor material ( fiber - reinforced polymer - based composite and defense - bullet ceramics ) ; researches the machining technology of light - composite - armor material, developing the special cutters and special clamps. researches the machining technology of light - composite - armor after molding, mainly resolving the drilling a hole and cut a straight - line of defense - bullet ceramics / fiber - reinforced polymer - based composite. using the machining tools, which mainly include multiple - tools machining fiber - reinforced polymer - based composite holes and diamond saw - blade, diamond hole - drills machining defense - bullet ceramics and so on, researched in this dissertation, the machining - experiment of composite, defense - bullet ceramics and ceramics / composite was carried through, and good machining result was gained
然而，輕質復合裝甲材料的加工仍是一個亟待
解決的問題，為此本課題分析研究了輕質復合裝甲材料的物理機械性能、組織結構特點和加工機理，即：維增強聚合物基復合材料和工程陶瓷；研製了輕質復合裝甲材料加工所用的專用工裝，主要包括專用刀具和專用夾具；研究了輕質復合裝甲成型后的加工技術，主要
解決了工程陶瓷復合材料板的鉆孔和直邊切割加工；利用所研究的加工纖維增強聚合物基復合材料臺階孔用的復合刀具、切割直邊用的金剛石釬焊切割
鋸片、加工工程陶瓷用的金剛石套料鉆、切割工程陶瓷復合材料板用的金剛石切割
鋸片等加工刀具對纖維增強聚合物基復合材料和工程陶瓷，以及工程陶瓷復合材料板進行了加工實驗，並取得了良好的實驗效果。
The paper dealt with the optimal design problem of stock layout patterns of saw cutting blanking for rectangular pieces of a single size, proposed a kind of optimal layout method of rectangular pieces of a single size, pointed out the mathematical basis, selective conditions of the optimal solution and layout disposal of the particular solution
摘要討論單一尺寸矩形件
鋸切下料排樣方式的最優設計問題，提出一種單一尺寸矩形件優化排樣方法，給出這一排樣方法的數學依據、優化
解的選擇條件和特殊
解的排樣處理。
Method of sample logs sawing and test specimens selection for physical and mechanical tests of wood
木材物理力學試材
鋸解及試樣截取方法
Analytical calculation of four bar mechanism track of four link hot saw machine
四連桿式熱
鋸機四桿機構的軌跡
解析計算
In chapter 4, the modified reynolds equation is solved numerically with the finite different method, and the generated axial thrust force, minimal mucus film thickness, load capacity of hydrodynamic pressure and circumferential friction under the serrate screw are obtained. at last, using numeral methods and coordinate graphs, the influences of serrate screw parameters on the generated axial thrust force, minimal mucus film thickness, load capacity of hydrodynamic pressure and circumferential friction are studied and analyzed
第四章，首先求出
鋸齒形螺紋下數值計算所需的有限差分方程，再推出了
鋸齒形螺紋作用下軸向摩擦牽引力、粘液膜厚度、粘液膜承載能力、周向摩擦阻力無量綱表達式，最後用數值計算方法求
解，通過坐標圖分析了
鋸齒形螺紋參數對軸向摩擦牽引力、最小粘液膜厚度、粘液膜承載能力、周向摩擦阻力的影響。
Figure i. 1 shows a basic laser diode chip which consists of two cleaved parallel facets and two sawed ( roughened ) sides
圖. 1所示的是由兩個平行
解理面和二個
鋸出的（粗糙）側面組成的激光二極體的管芯。
Round and sawn timber. method of measurement of biological degrade
圓木和
鋸材.生物降
解測量方法
After the collection of testing materials, 4 people in the group of testing materials collection visited the tissue culture center, dongmen forestry center and nanning chengda sawmill, and exchanged information regarding tissue culture and eucalyptus wood sawing and drying
試材採集后，採集組的4位成員參觀了東門林場組織培養中心和南寧成大
鋸材廠，和有關人員交換了組織培養過程和桉樹
鋸材生產的信息，了
解了桉樹組織培養過程、
鋸材生產過程和乾燥過程中存在的問題，以便在以後的科研中有的放矢。
And relying on this, our laboratory proposes a new cladding method. by means of large dynamic explicit fem code ansys / ls - dyna, the numerical simulation was carried out in bimetal forming process. during the simulation of the forming process, the large deformation of the strip should be considered, as well as geometrical and material nonlinear, the contact between the roller and the strip, the contact between two metal sheets and the load. as for these problems, we can use node to surface contact and relative parameters, biso model is introduced, the load is applied as array
本文採用ansys / ls - dyna計算程序為分析工具，對
鋸齒形雙金屬復合板成型過程進行計算機數值模擬，在對軋制過程模擬時，針對軋件變形的幾何非線性和材料非線性特點、軋輥與軋件間的接觸、軋件間的接觸以及模型的加載等問題，給出了在ansys / ls - dyna中相應的
解決方法：應用nodetosurface接觸方式，設定相應參數，選用雙線性等向硬化模型，載荷作為array施加在剛體質心。
The complex situation of flight requests that the graphics display of cockpit must be dynamic, real - time and legible. but in the raster graphic display system, scale lines and character will be distorted seriously owe to the limited screen resolution in the case of deflection, which affect the display quality. the thesis based on the research of the last graduate student improves the graphics creating arithmetic more and puts forward more effective arithmetic on scale lines and character for high display quality
由於飛行狀態復雜，要求座艙內畫面顯示動態、實時、清晰。而硬體系統採用的是光柵圖形顯示，字元和刻度線的旋轉受屏幕
解析度的限制存在著
鋸齒走樣現象，影響顯示效果。本文在上一屆研究生研究的基礎上，在圖形生成演算法上加以進一步改進，重點在刻度線、字元的反走樣處理上，研究出了更合理的演算法，提高了圖形顯示質量。
See the drawing after understanding the above differences, you can select best hand saws to create the highest profit and best image for yourself, customers and companies
在了
解上述的差異后，相信大家在為自己客戶或公司選擇手工
鋸時，可以做出最好的選擇，為公司客戶及自己創造出最高的利潤及最好的形象。
And a method of node optimization according to beeline is also put forward to decrease large amounts of short straight lines and ensure sameness of image profile to object prototype. it improves the precision of engraving and suffices the request of engrave machining
為減少邊緣線上的大量結點和鋸齒，保證優化后的圖形輪廓與原圖像逼近，提出了基於最短距離優化節點的解決方法，從而提高了精度，滿足了雕刻加工的要求。
