打靶

Based on the nonlinear dynamical model of the rotor-bearing system with rub-impact fault, the stability of the periodic motion of the system in unbalance-rotating speed plane and rotor/stator clearance- rotating speed plane were studied by the continuation-shooting algorithm. The system periodic motion and its stability were obtained. An experimental setup was developed to investigate nonlinear vibration characteristics of such rotor bearing system.

根据碰摩转子轴承系统的非线性动力学模型，利用延拓打靶算法，在碰摩转子轴承系统不平衡量-转速和碰摩间隙-转速参数域内，研究系统的周期运动及其分岔失稳等动力学行为，得到了系统周期运动的稳定性及失稳规律；建立了研究转子轴承系统碰摩故障的实验装置，通过实验，研究了转子系统碰摩故障的非线性振动的特征。

The signal processing of the laser target shooting system mainly consists of signal amplification, signal encoding and data transmission.

激光打靶系统的主要信号处理过程包括：信号的放大、编码和数据传输。

The laser target shooting system consists of semiconductor laser gun, photoelectric detector, and signal processing circuit, which is the key part of the whole system.

激光打靶系统主要包括半导体激光枪、光电探测器和信号处理电路，信号处理过程是整个系统的关键。

ABSTRACT In the experimental investigations of inertial confinement fusion , the laser-produced high-temperature plasmas contain very abundant information, such as the electron temperature, density, ionization, etc.

在惯性约束聚变实验研究中，激光打靶产生的高温等离子体包含着十分丰富的信息，如电子的温度、密度和离化度等。

Theorem 4.1 For the Timoshenko beam problem, the solution of shooting method is stable for the parameter ε.

定理4.1对Timoshenko横梁问题，打靶法的解关于参数ε稳定，即当ε→0时，locking现象消失。

Fermat's principle ; ray tracing ; spline function ; gradient method ; target method

费马原理；射线追踪；样条函数；梯度法；打靶法

objective: to design pcr primer for targeting vector homology arm of pres gene.

目的：设计pres基因打靶载体同源臂的pcr引物。

So, our main work is to obtain a satisfactory electron beam with diameter about micrometers by means of choosing a suitable LaBe cathode electron-gun system and a suitable focusing system.

电子束打靶产生X射线已经是很成熟的理论，因此，本论文的理论研究重点是选择合适结构的电子源系统与合适结构的聚焦系统并将电子束会聚为微米级的细小束斑。

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％。