William bradford , speaking in 1630 of the founding of the plymouth bay colony , said that all great and honorable actions are accompanied with great difficulty , and both must be enterprising and overcome with answerable3 courage 1630年，威廉& # 8226 ;布拉德福曾在普利茅斯湾殖民地建立仪式上说，所有伟大而光荣的行动都伴随着巨大的困难，而完成这些行动需具备冒险精神和与此相当的勇气。
( 1 ) in view of practice that the data obtained from accelerometer has serious zero deviation , it is very difficult to diagnosis fault by hardware redundant . a fault diagnosis scheme for multi - accelerometers employing predictor based on radial basis function ( rbf ) neural network is proposed 论文的主要创新成果有： ( 1 )在摆式列车实际运行中，检测子系统的加速度传感器存在严重零偏，使用硬件冗余法进行故障诊断的设计初衷面临着巨大的困难。
Because of the complicated environment of interference about electromagnetism and distributed multilayer of high voltage , it is very difficult to change the old system . but we change the technology scheme some times , in the end we have the mature and feasible technology scheme 由于加速器内部异常复杂的电磁干扰环境和多层的高电压分布，给技术改造工作带来了巨大的困难，但随着技术方案不断改进，终于确定了比较成熟的且具有可行性的技术方案。
The present system softwares in the domestic are basically cornered by oversea softwares , so national software industry is encounter with great diffculty and it is diffcult to ensure our country ' s information safety . the emergence of the linux operating system doubtless makes us start from a high originating point , creating enormous chances for our country " s development of system softwares 我国目前的系统软件基本上被国外软件所垄断，民族软件产业发展面临着巨大的困难，国家信息安全难以保证， linux操作系统的出现无疑使我们可以从高起点起步，为我国发展系统软件创造了巨大的机会。
But the personality teaching still faces great difficulties , such as the constraint of the educational system , the backwardness of the educational concept , the teachers " poor quality and restrictions of the realistic situations and so on , which requir e us to reform the current educational systems and innovate the education concept and improve the teachers " quality and develop national economy and control population , only in this way can we truly practice the personality - orientated teaching 但是个性教学仍然面临着巨大的困难，例如教育制度的束缚，教育理念的滞后，教师素养的落后以及现实条件的限制等，这要求我们必须要改革现行的教育体制，革新教育观念，以及大力提高教师素养，发展经济、控制人口等，才有可能真正实施个性教学。
It is not exaggerate at all to assert that the tracking of animals in video sequences is full of challenge . especially , the mouse targets bring enormous difficulties in tracking , which are the varieties of shapes , irregularities of motion , high frequent and serious occluding , as well as high similarities between targets leading to difficulties to distinguish them 可以毫不夸张的说视频序列中实现对动物的跟踪更具有挑战性,尤其是鼠类目标,其形状的多变性,运动的无规律性,频繁而且严重的遮挡,目标之间的高度相似以致难以区分等都给跟踪带来的巨大的困难。
Our research chooses ns2 as simulation platform . ns2 is an open - source software , and its design architecture is very suitable for nodes simulation in ad hoc networks , while its open - source property challenges primary users . at the same time , we will evaluate different mobile models in our research Ns2是一个开放源代码的优秀仿真软件,它的分裂式编程结构和基于节点的设计理念非常适合对adhoc网络协议进行仿真和性能评估,同时它的开放性也给初级用户带来了巨大的困难和挑战。
