The Saudi border has been perhaps more porous in the past, but with the current instability in Yemen the Saudis have certainly tightened up their controls.
过去，沙特边境可能更加疏漏，但是由于也门目前的动荡局势，沙特加强了对边境的控制。
Instability and reasons of peak current control are also expatiated.
阐述了峰值电流控制的不稳定性及原因。
Instability and reasons of peak current controlled BOOST converter are simply analyzed, basic principles of slope compensation and design problems are also expatiated.
简要分析了峰值电流控制模式升压变换器的不稳定性及其原因，阐述了斜坡补偿的基本原理和设计问题。
Implementing exogenous collagen crosslinking as an adjunct to current surgical decompression procedures may be beneficial in preventing or delaying subsequent spinal instability and degeneration.
采用外源性胶原交联作为目前手术减压的辅助方法，在防止或延缓继发脊柱不稳定和退化可能是有益的。
An instability phenomenon of the current sheath implosion, namely the unstable mode, has been observed in the DPF 40 plasma focus device.
在DPF- 40等离子体焦点装置中，首次观测到径向运动电流壳层的一种不稳定现象，即不稳定模式。
Conclusion: The current CT arthrography provides important X ray information for both diagnosis of shoulder instability and anatomatic repair of shoulder instability.
结论：CT气-碘双对比造影可以明确诊断肩关节不稳定，并为肩关节不稳定的解剖修复提供重要的影像学信息。
The helical instability problem of an arc plasma column with a parabolic current profile in a magnetic field is discussed.
讨论了具有抛物线形电流分布的电弧等离子体柱在磁场中的不稳定性问题。
The influence of shear flow along the magnetic field accompanied with a plane current layer on the tearing instability is analyzed.
在电流片两侧的基态速度场与磁场相互平行的位形下，讨论了速度切变对撕裂模不稳定性的影响。
The capacitive current inner loop is used to suppress system instability and the capacitive current is obtained by estimation.
算法引入电容电流内环以抑制系统不稳定的现象，电容电流信号通过估计过程得到。
Firstly, it is pointed out that there are some defects in the current virtual reproduction system, including narrow listening area, instability in sound image, etc.
本文首先指出，现有的两扬声器虚拟重发存在听音区域窄、声像稳定性差等缺陷。
The high voltage direct current (HVDC) system connected with weak AC system is considered to be one of the causes for voltage instability.
与弱交流系统相连的高压直流系统被认为是引起电压不稳定的一个因素，评价交直流系统电压稳定性的方法相当复杂。
In this paper we employ a two-step implicit difference scheme to study numerically THS resistive helical instability of current-carrying plasma column with free boundary.
本文采用两步隐式差分格式研究了自由边界载流等离子体柱的电阻螺旋模不稳定性。
The current implosion in Pakistan is just one more reminder of the instability of the greater Middle East.
巴基斯坦时局就是大中东地区局势不稳定的又一次警钟。
The rainstorm area in Jiangxi caused by BILIS matches well with upward current and upper divergence and relates with asymmetry, terrain and instability.
碧利斯“造成的江西暴雨落区，与辐合上升运动中心及高层辐散中心对应较好，并与台风不对称环流、地形、不稳定能量等因素有关；
The rainstorm area in Jiangxi caused by BILIS matches well with upward current and upper divergence and relates with asymmetry, terrain and instability.
碧利斯“造成的江西暴雨落区，与辐合上升运动中心及高层辐散中心对应较好，并与台风不对称环流、地形、不稳定能量等因素有关；
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