脉冲持续时间

The plates exhibit three different critical conditions: bucklin'g, plastic incipience and plastic collapsing.

理想脉冲冲击的特征：具有较高的幅值和极短的持续时间。

Precessional magnetization reversal of a thin film induced by applying a small oscillating field perpendicular to the easy anisotropy axis is also studied.

我们给出了振荡偏压场的频率与翻转时间的关系，以及脉冲偏压场的持续时间与翻转时间的关系。

The result shows that, under the condition of the same thickness of material, increasing the number of layers properly can weaken the press, the cutting damage and the destruction due to extension, and lower the impact energy on the construction effectively. In particular, multi-layered protection construction is rather striking in its advantage of destruction-resistance under high stress and low impulse load.

结果表明，分层总厚度相等的条件下，适当增加分层数目可以有效减小冲击载荷对结构的压、剪损伤和拉伸破坏，降低结构所受的冲击能量，尤其对于高强度、持续时间短的脉冲载荷，多分层防护结构的抗毁伤能力优势更为明显。

In addition to differences in duration, the two types also differ in the type of energy released, with short ones emitting a quick burst of comparatively high energy.

除了持续时间上的差异，这两种类型在释放的能量类型上也截然不同，短持续时间的那类释放出一种相对来说高能量的快脉冲。

The ultrafast laser technology is expanding to new waveband as well as to a less during time.

不断深入的研究工作则要求超短激光技术继续朝着更短的脉冲持续时间和新的激光波段发展，这一般可通过飞秒激光同物质的非线性相互作用得到。

Result Biphasic electrical field pulse extended the APD longer than that with monophasic one.

结果 双相电场脉冲比单相脉冲更多地扩展细胞的动作电位时程；不同强度的双相波电场脉冲，对动作电位时程的扩展能力非常相近，而不同强度的单相波对动作电位的扩展能力差别很大，电击后动作电位时程空间分布不均匀；动作电位的扩展主要取决于脉冲强度的峰值，和脉冲持续时间关系不大。

Nasutus lasts 4.5 ms,consisting of 4 pulse-strings with an inter-chirp interval of 1.8 ms,and the frequency of highest power peak is about 11.37 kHz. The chirp of the songs of E.

鼻优草螽鸣声的每个脉冲组由4个脉冲串构成，脉冲组持续时间4.5 ms，脉冲组间隔为1.8 ms，主能峰频率为11.37 kHz。

The conventional SHPB technique is improved by using a pulse shaper. Pulse shapers technique is used to modify the incident wave and decrease the effect of wave dispersion to ensure stress equilibrium and homogeneous deformation in specimen, and furthermore a constant strain rate is attained during the loading history. The lasting time of acceleration pulse is enhanced to numerable MSEL, which is more close to actual loading.

本文改进了传统的霍普金森压杆技术，采用波形整形技术，改变加载波形，获得了比较光滑的入射波，降低了波的弥散效应，保证实验时火工品试样中的应力平衡和均匀变形，得到了更接近常应变率的动态加载条件，使加速度脉冲持续时间t提高数倍，更加真实的反映了火工品实际加载环境。

It has been shown that chronic stimulation of cultured cardiac myocytes prevents dedifferentiation, maintaining the contractile properties of the cell for much longer than unstimulated cells.

及可同时刺激48个独立的细胞培养皿，每个输出刺激器均可独立设置脉冲特征（程序化电压、频率，持续时间及间隔时间）。

This paper models airdropping, simulated the process of cargo impacting ground, analyzes the effects of airdrop velocity, cargo materials, and cargo thickness on peak acceleration and pulse duration. It helps to provide guidelines for field experiments, and accordingly reduces the time and the cost.

在建立空投货物模型的基础上，利用计算机仿真货物与地面冲击的过程，分析下落速度、货物材料、厚度对最大加速度和脉冲持续时间的影响，用於指导实际的外场试验，从而节约时间和成本。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。