查询词典 trajectory

Contrast experiments showed that the "water type trajectory" would be obtained with the promoter of water structure, and "pyridine type trajectory" would be obtained with damager of water structure. They would be related to the strength of electromagnetic field radiation in natural surroundings.

对比 实验表明产生这两类导电轨迹的原因是由于物质对水的结构有促进能力和破坏能力两种不同功能所造成；而电导率持续变化的原因则可能与自然环境某些电磁辐射场强度的持续变化有关连。

Abstract］ objective to explore the accuracy and safety of safety drillprepared for cervical pedicle screw trajectory.methods fourteen adult cadaver specimens of cervical spine（c3～c7）with intact structures including ligaments and perivertebral muscles were reserved and used.according to the radiographic measurements,safety drill was inserted into cervical pedicle individually.the evaluation of the drill's trajectory was carried out by ct scan and three-dimension reconstruction and autopsy.results one hundred and forty drill's trajectories were made.9 holes failed with a perforation rate of 6.4%.conclusion the safety drill prepared for cervical pedicle screw hole is safe and effective and can be applied and popularized clinically.

目的 探索安全钻头应用于颈椎弓根螺钉孔道钻探的安全性与准确性。方法随机取14具福尔马林浸泡的成人颈椎标本（c3～c7），保留完整的脊柱三柱结构及相关的韧带和椎旁肌，根据影像学测量的进钉点和进钉方向，模拟颈椎后路手术过程。选用安全钻头，进行实际的颈椎弓根螺钉孔道的钻探，将孔道行ct扫描，并斜位三维重建孔道形态，并以肉眼直视观察结果为金标准，评价孔道钻探的成败。结果钻探孔道准确率89.3%（125/140），穿孔率6.4%（9/140）。结论安全钻头应用于颈椎弓根螺钉孔道钻探的安全性与准确性均较高，可以在临床上推广使用。

According to the air trajectory of every rocket-assisted torpedo part, we establish an equation group of air vertical motion, improve the in-air trajectory model, and simulatively calculate the polynomials of firing distance and flight time,and firing distance and shut down time. Making use of the polynomials, we calculate the cooperative time of formation salvo of torpedoes, and determine command ways for different situations. The result may facilitate the research of operational application of rocket-assisted torpedo.

根据火箭助飞鱼雷空中运动各部分的特点，建立了其空中纵向运动方程组，完善了空中弹道模型，仿真计算了射程-飞行时间和射程-关机时间关系多项式，利用关系式计算了编队齐射火箭助飞鱼雷的协同时间，确定了不同态势下的指挥方式，为深入研究火箭助飞鱼雷编队作战使用问题提供了重要的参考数据和理论依据。

The fractal dimension and tortuosity of trajectory are analyzed. The method of calculating the fractal dimension of trajectory is developed.

分析了孔道轴向分形维数与孔道空间曲折性的关系，建立了关联色谱固定相内孔道轴向分形维数的计算式。

In addition, because the trajectory error of the end effector is increasing when the joints are motivated by untuned joint signals, a tuning method of joints is proposed to reduce the trajectory error. The effectiveness of this method is proved in the experiment.

另外，为解决实验中发现的机器人末端轨迹误差较大的问题，根据实验特点设计了机器人关节角输入补偿策略，提高了实验中机器人末端轨迹的跟踪精度。

The model of mine's trajectory is built,and the model of wallop is built.Then the underwater trajectory of the airdropped mine is simulated by Matlab/Simulink.At last,This paper gets the result of simulation and analysis.

在建立了六自由度的水雷水下弹道数学模型和水雷入水击水力计算的数学模型基础上，通过实例对水雷的水下弹道在Matlab/Simulink环境下进行了仿真计算，最后给出相应的仿真结果和分析。

Vibration of hole trajectory is mastered in time by wireless inclinometer and control of sidetracking hole trajectory is ensured by using small hole guiding motor of different specification, which improve the coincidence rate of hole profile and hitting target accuracy and achieve drilling of high quality, high speed and safe. The window sidetracking success of 177.8mm horizontal well provides favorable reference and reliable technical guarantee for development and application of small hole in future.

使用无线随钻测斜仪及时准确地掌握了井眼轨迹的变化，配合使用不同规格小井眼导向马达确保侧钻井眼轨迹的控制，提高了井眼剖面符合率和中靶精度，实现了优质、快速、安全钻进。177.8mm水平井开窗侧钻技术的成功应用为今后小井眼的开发和应用提供了依据。

The trajectory of reentry capsule in black-out area is thus made up.And the complete set of trajectory pa...

对某飞船返回舱的飞行试验数据进行了计算和分析，结果证实了弹道重建数学模型和算法的正确性以及迎角和侧滑角估计方法的有效性。

In anti-ship missile ,large-space mobile trajectory and "dolphin fly" is used for the long range intercept missile,and "snake forward" mobile trajectory or newly random mobile is used for the short distance intercept missile,and stealth technique is also used to increase its penetration rate.

反舰导弹对远程拦截导弹的突防过程中采用了大空域机动弹道和&海豚飞&两种突防模式，在穿透近程拦截导弹防御时采用&蛇行&机动或新型的随机机动突防模式，还采用隐身技术来提高突防概率。

According to the trajectory specialty of ERGS, this paper distributed the initial alignment errors and simulated the whole trajectory of the integrated navigation system.

根据超远程炮弹的弹道特点，进行了初始对准的误差分配，完成了全弹道组合导航系统仿真计算。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。