减速伞

After the airdrop experiments of the system of the projectile and speed-down parachute, the balance velocity obtained from the optics apparatus on the ground、the balance spinning speed obtained from the gyroscope on the projectile and the image obtained from the infrared detector on the projectile are all used to simulate the six-dimension exterior trajectory of the projectile and identify the roll damping moment derivatives, and the identification can safely come to a conclusion that the absolute value of roll damping moment derivatives from the engineering calculation are on the low side.

对卷弧尾翼弹与减速伞系统进行空投试验，由地面光测系统给出平衡落速、弹上陀螺给出平衡转速、弹上红外探测器拍摄地面图像判断弹的姿态。通过六自由度弹道模拟，对弹滚转阻尼导数进行参数辨识，得到工程估算所得滚转阻尼导数绝对值偏小的结论。 5。对空投试验中出现弹姿态摆动现象，从受力分析及红外图像分析两个方面进行探讨，给出合理解释，并根据分析对弹外形进行修改，在后来的试验中收到很好的效果。

The motion characteristics of full developed rotational deceleration parachute of the system are studied in this paper.

该文对末敏弹系统全充满旋转减速伞的运动特性进行研究。

Powder metallurgy gears include: bevel gear, dual-gear, gear box gears, planetary gears, ring gear, rack, sector gears, bevel gears, spur gears, sun gear, helical gear, gear shaft, flat gears, spur gears, double layer gear, synchronous pulley, helical gear, sprocket, ratchet, multi-gears, micro-gear, small modulus gear, special gear, differential bevel gear, reducer gears, variable speed gear motor, all kinds of precision gears.

粉末冶金齿轮包括：伞齿轮、双联齿轮、齿轮箱齿轮、行星齿轮、齿圈、齿条、扇形齿轮、锥齿轮、直齿轮、太阳齿轮、斜齿轮、齿轴、平齿轮、正齿轮、双层齿轮、同步轮、皮带轮、螺旋齿轮、链轮、棘轮、多层齿轮、微型齿轮、小模数齿轮、异形齿轮、差速伞齿轮、减速机齿轮、变速电机齿轮、各类精密传动齿轮。

According to Newton's law, all objects fall to Earth at a rate of acceleration of 9.8 meter per sec2 (32 ft/sec2), which in the case of our wing, is opposed or slowed down by the aerodynamic forces.

根据牛顿定理，所有的物体皆以每秒9.8米(32英0/秒)的加速度的比率下降到地球。而我们伞翼情况，则是被空气动力学的力量抵消或者减速。

Right angle bevel gear reducer of the B series, concentric shaft bevel gear reducer of the H series, no paragraph series variable speed reducer.

直角斜齿轮减速机的B系列、同心轴伞齿轮减速机的H系列，无段变速减速机系列等。

A high speed line material vertical rolling mill framework moderating machine gearbox of Hunan steel Co., Ltd, the gear teeth of the first transmission spiral bevel wheel were broken.

詹仁杭，轧立式轧机减速机螺旋伞齿轮断齿原因分析湘钢一高速线材粗中轧立式机架减速机齿轮箱，第一级传动螺旋伞齿轮轮齿断裂。

The main products are: R Series Hardened helical gear reducer, S series helical gears - worm reducer, K Series helical gears - spiral bevel gear reducer, F series parallel shaft helical gear reducer, T series of spiral bevel gear to me , RV series aluminum alloy Worm Gear reducer, MB series of mechanical friction planetary CVT, hardened cylinder gear reducer and specifications of the various types of special gear, the worm reducer the design and manufacture.

R系列硬齿面斜齿轮减速机、S系列斜齿轮-蜗轮减速机、K系列斜齿轮-螺旋伞齿轮减速机、F系列平行轴斜齿轮减速机、T系列螺旋锥齿轮转向箱、RV系列铝合金蜗轮蜗杆减速机、MB系列行星摩擦式机械无级变速器、硬齿面圆柱齿轮减速机及各类特殊规格的齿轮、蜗轮减速机的设计制造。

The optimization design problem of reducing planet gear box in big power inverted umbrella aeration machine has been solved.

本文通过对遗传算法的研究，构造了大功率倒伞曝气机行星减速齿轮箱的数学模型，通过编码的方法对其轮系的离散变量、整型变量进行了寻优设计，解决了大功率倒伞曝气机行星齿轮优化设计的问

With the traditional vertical layout of the single-motor compared to Shearer, Shearer will be the ranging-arm installed directly in the cutting of the shell, gear device exclusively on cutting Shell and planetary reducer, the abolition of the spiral bevel gears, gear box fixed, Rocker rotating sets of structures, their structure is simpler, more compact and higher reliability.

与传统的纵向布置的单电机采煤机相比，该采煤机将截割电机直接安装在截割部壳体内，齿轮减速装置全部集中在截割部壳体及行星减速器内，取消了螺旋伞齿轮、固定减速箱、摇臂回转套等结构，使其结构更简单、紧凑，可靠性更高。

With thetraditional vertical layout of the single-motor compared toShearer, Shearer will be the ranging-arm installed directly in thecutting of the shell, gear device exclusively on cutting Shell andplanetary reducer, the abolition of the spiral bevel gears, gearbox fixed, Rocker rotating sets of structures, their structure issimpler, more compact and higher reliability.

与传统的纵向布置的单电机采煤机相比，该采煤机将截割电机直接安装在截割部壳体内，齿轮减速装置全部集中在截割部壳体及行星减速器内，取消了螺旋伞齿轮、固定减速箱、摇臂回转套等结构，使其结构更简单、紧凑，可靠性更高。

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。