1. I don't clean up this fitting, because it is a cupronickel fitting, so it is more light-colored thank brass fitting, its pics look newer. 装具我未做任何清理，因是白铜装具，所以颜色上显得比黄铜装具淡一些，用相机拍完后显得很新。
2. Cone type end fitting design is one of two end fitting designs most commonly used today. other a kind design is compression type fitting. difference between the two fittings is shown the table 1. 锥形粘接结构是今天最广泛使用的两种端部附件结构之一，另一种是压接式附件。
3. Push together firmly on the two halves of the coupler fitting until the garter spring in the cage on the male half of the fitting snaps over the flanged end on the female half of the fitting. 紧固地推动联结器配件的两半件直到配件阳半件罩上的箍簧卡在配件阴半件上。
4. Push together firmly on the two halves of the coupler fitting until the garter spring in the cage on the male half of the fitting snaps over the flanged end on the female half of the fitting. 紧固地推动联结器配件的两半件直到配件阳半件罩上的箍簧卡在配件阴半件上。
5. The two curve fitting methods, the polynomial curve fitting method and the proposes B-spline curve fitting method, are compared. 通过仿真对目前出现的基于粒子群优化算法的无人机路径的多项式拟合方法和所提出的基于B样条拟合的方法进行了比较。
