one sided derivative

The axisymmetric finite element model was established according to the structure character of the resistance spot single-sided welding tubesheet.

通过结构、热电场的全耦合,分析了焊接过程中接触面压力变化规律,单边焊熔核形成过程以及形核特点等。

A frequency synthesizer used in the single side band transmitter in coal mine was introduced and the Characteristics of the phase locked loop of the current frequency and phase discriminator were analysed in detail.

本文具体介绍了用于井下中频单边带通信机中频率合成器，详细分析了电流型鉴频，鉴相合成器锁相环的性能和特点，并且设计了电流型鉴频，鉴相合成器锁相环的实现电

A computer simulation method is proposed in this paper to generate Doppler ultrasound signals from vessels with asymmetric stenosis.

以往的血管狭窄仿真信号的研究仅限于双边狭窄的对称情况,文章提出了一种单边狭窄血管中超声多普勒信号的仿真方法。

The disconnected contour lines are dealt with and saved as number of polygon,by the contour lines and their unilateral adjacency relation the whole area is divided into independent zonal region,then DEM is generated.

首先对等高线进行完整性处理并按多边形编号存储,利用既有的等高线及其单边邻接关系将整个地形图划分为相互独立的带状区域,形成DEM模型;通过搜索查询点所在的带状区域及对应的等高线高程值,采用距离加权平均法计算查询点的高程。

Based on the dynamic change of the intersection traffic flow,two intersection traffic control strategies were proposed,including the variable lane use on certain intersection approach,and the split-phase signal control strategy.

针对信号控制交叉口实际流量动态变化的特征,在现有传统控制方法的基础上根据交叉口交通流的变化特点,提出采用可变车道控制模式的控制方法、单边轮放控制模式的控制方法,介绍了其潜在的适用条件、优势及特点,并在交通流量调查的的基础上,建立了交叉口的相应仿真模型,利用信号控制仿真软件Synchro验证了在高峰期不同控制方法的效果。