查询词典 disturbance

Savannas, said Warshall, have evolved in conditions of periodic disturbance and require a natural kick every now and then.

他说，热带草原在周期扰动的情况下进化，时不时地需要自然助力。

Salvoes of a group of artillery are the most used striking means in the battlefield. Many factors, such as the dynamic characteristics and random disturbance, can raise the positioning errors and synchronization errors, which will inevitably reduce the positioning accuracy of artillery.

火炮群射击是火炮主要的作战手段，由于各火炮特性的分散及随机干扰等多种因素的影响，在射击时会产生火炮与火炮之间的运动位置误差，出现运动不同步的现象，进而影响火炮的定位精度。

4The low similarities betweenseed banks and the established vegetation were considered to be the consequences ofthe frequent presence in the established vegetation but not in seed banks of someperennial rhizomatous plants which mainly depended on vegetative propagation toregenerate;insignificant difference in the species composition of seed barks amongtransects, might be accounted for by the fact that the flood drift had functioned as adisseminator for propagules;and with the intensifying of the flooding disturbance,both species diversity and the similarity between seed banks and establishedvegetations declined.

4种子库与地上植被相似性普遍较低，其原因是主要靠营养繁殖以更新种群的多年生根茎植物经常在植被中出现而不在种子库中出现；受水淹干扰的样带之间种子库的种类组成差异不大，说明洪水漂移行使了繁殖体传播和散布的功能；随水淹干扰强度增加，种子库物种多样性指数减小，种子库与地上植被的物种组成相似性下降。

However, this contact cause severe disturbance of bone blood supply beneath the plate, result in bone necrosis and remolding, osteoporosis is inevitable.

对局部血运的损害，最终减慢了骨折愈合的速度，增加了局部感染的机会。

Compared with the prior art, the invention has the advantages that:(1) the active neural microelectrode integrates signal collection/processing and stimulation function in the same preposed signal processing chip, which can reduce the disturbance of environmental noise, inhibit the attenuation caused by parasitic capacitance, filter polarized voltage and greatly improve the speech-noise ratio and stability of the whole microelectrode; and (2) the active neural microelectrode integrates digital logic control and stimulation circuit in the chip, so as to reduce the amount of output leads and simplify the complexity of subsequent circuits.

本发明相对于现有技术具有如下突出特点：(1)将信号的采集，处理以及刺激功能集成在一个前置信号处理芯片上，不仅减少了因为环境噪声的干扰，而且很好的抑制了寄生电容引起的衰减，滤除了极化电压，大大增强了整个微电极的信噪比和稳定性；(2)同时，将数字逻辑控制和刺激电路也集成在此芯片上，减少了输出引线的数目，简化了后续电路的复杂性。

A nonlinear adaptive speed controller based on adaptive backstepping approach for permanent magnet synchronous motors with nonlinear coupling and parameter uncertainties is presented. With the preposed controller, the parameter uncertainties are compensated and high performance speed controller for permanent magnet synchronous motors is shown to be globally asymptotically stable. The scheme is robust to the parameter uncertainties and load torque disturbance.

针对永磁同步电动机系统的非线性耦合特性以及参数的不确定性，采用自适应反步控制实现永磁同步电动机的非线性控制，在补偿参数不确定性影响，提高系统的抗干扰能力的同时，实现了永磁同步电动机的高性能全局渐近稳定速度跟踪控制。

The bankruptcy of GM give rise to a great disturbance in global auto industry, it is considered that Chinese auto prats industry will be affected heavily and crisis will occur in auto parts manufacturers.

美国通用汽车的破产在全球汽车行业掀起了一阵轩然大波。原以为通用汽车公司的倒闭将会严重影响国内的汽配行业，对国内的汽车零部件生产商造成危机。

Looks by far, sees only these grotesque planetoids, some elephant potato, some elephant duck egg, but also some simply indescribable, in which biggest diameter almost has 890 kilometers, but the smallest diameter on several centimeters sizes, is also similar with the small bird's egg, in vast outer space naked eye nearly blind, obviously between these planetoids has the huge difference; Luckily this circles the planetoid which the sun moves, besides appearance irregular, knows one's place extremely, moreover the ingredient quite is unitary, majority all is the lithical meteor, they then receive the outside space powerful disturbance, or suffers other photostar hit in the situation, only then has the possibility the star to cause the damage to peripheral other solar system in.

远远望去，只见这些奇形怪状的小行星，有的像土豆，有的像鸭蛋，还有的简直无法形容，其中最大的直径差不多有八九十千米，而最小的直径也就几厘米大小，跟小鸟蛋差不多，在浩瀚的太空中肉眼几乎看不到，可见这些小行星之间存在着巨大的差异；幸好这一圈绕太阳运行的小行星，除了模样参差不齐之外，还是非常安分守己的，而且成分比较单一，大多数都是石质陨星，它们只有受到外界空间强有力的干扰，或遭受其他星体撞击的情况下，才有可能对周边的其它太阳系内星球造成伤害。

Result and Conclusion:A neurological event was not the cause of any patient's death. 17 patients(6.2%) had clinically significant neurological disturbance postoperatively,of these 82.4% were central and 17.6% peripheral nerve pareses.

结果：心脏直视手术的神经系统并发症的发生率为6.2％，其中14／17为中枢神经系统并发症，3／17为外周神经轻瘫，除迟发性偏瘫预后较差外，其余的神经系统并发症预后较好。

The value of wetland ecosystem service function is decreasing in Beijing.Disturbance has overed the capacity that wetland ecosystem can support nearby ten years.

北京湿地生态系统服务功能具有重要的经济价值，其支持、调节、文化、产品四类核心功能总价值达1000亿元人民币。4。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。