借助于

Green oxidation using clean oxidants under environmentally friendly solvents with recyclable solid catalyst is a focus among oxidations.

在氧化反应的研究过程中，利用清洁的氧化剂，借助于可循环使用的固相材料为催化剂，使用对环境友好的溶剂体系，是绿色氧化反应的一个研究方向。

The quarter-wave plates are attached by bayonet type couplings to the supporting rings of their respective polarizers.

四分之一波片借助于枪刺式联结器与各自的偏振镜的座环相联结。

My brother has a walking disorder and he must use a wheel chair.

我的弟弟行走有问题，他必须借助于轮椅才行。

Then, smooth actions of three controllers are assured. Using the definition of 'fuzzy transfer function', the approximate corresponding relationship between well-tuned parameter of PID liner controller and scaling gains of fuzzy controller is established.

在模糊控制器的参数整定上，借助于模糊传递函数的定义，建立了模糊控制器比例因子与PID线性控制器整定参数的近似对应关系，于是模糊控制器的最佳参数便可通过较少的试凑被整定出来，简化了模糊控制器的设计。

By means of the present model certain phenomena related to the nonlinear acoustic properties of an orifice, such as the roll-up of the shed vortex sheet and the forming of the Vena-Contracta are simulated. For a sinusoidal sound pressure, the time- history of the average velocity through the orifice is computed, and the nonlinear distortion of the velocity is examined by means of the Fourier decomposition.

依据此模型，对圆孔声学非线性效应的若干特征现象进行了数值模拟，如脱落涡层的卷曲，Vena收缩段的动态形成；在孔板前声压按余弦规律变化的情况下，计算了孔中平均速度的时间历程，并借助于Fourier分解分析了孔中平均速度的畸变情况。

Firstly, this paper begins with the study of the history and development of our transport ship supplying system and makes it clear that it is necessary to use advanced management ideas and methods, especially the information technology, to restructure the whole process of ship chain supply.

首先，本文从研究我国运输船舶供应体系沿革与发展入手，通过研究我国运输船舶供应体系存在的问题，认为必须借助于先进的管理理念和方法，特别是先进的信息技术对整个供应流程进行重新构造和整合。

Wire electrode based on the trajectory of the different forms of control, WEDM can be divided into three types: one is shaped by the imitation controlled cutting in line in advance and work to create the same shape by mold, when processing the workpiece at the same time rough and on the mold clamping in the machine tool table, in the process of cutting wire electrode tightly against the mold on the edge of the track for the mobile, thus cutting out and die on the same shape and precision to the workpiece; another One is the electro-optical tracking control, to carry out the cutting line, before the basis of certain parts to enlarge the proportion of drawings depicts an electro-optical tracking map-processing machines will be placed in design stage of electro-optical tracking, tracking platform Photoelectric first line of graphics has always been to follow the track of the Mexican campaign, and then through the use of electrical, mechanical linkage to control the machine tool table, together with the workpiece so相似形wire electrode relative movement, thus cutting out the same shape and design to the workpiece; again a digital control, the use of advanced automatic control of digital technology-driven machine tool in accordance with the pre-processing parameters according to the workpiece geometry pre-processing procedures for the preparation of a good CNC auto-complete processing, the production does not require appearance on board the need to map to enlarge map of the previous two form of control has a higher machining accuracy and a broad range of applications, both at home and abroad more than 95% have adopted WEDM NC.

根据对电极丝运动轨迹的控制形式不同，电火花线切割机床又可分为三种：一种是靠模仿形控制，其在进行线切割加工前，预先制造出与工件形状相同的靠模，加工时把工件毛坯和靠模同时装夹在机床工作台上，在切割过程中电极丝紧紧地贴着靠模边缘作轨迹移动，从而切割出与靠模形状和精度相同的工件来；另一种是光电跟踪控制，其在进行线切割加工前，先根据零件图样按一定放大比例描绘出一张光电跟踪图，加工时将图样置于机床的光电跟踪台上，跟踪台上的光电头始终追随墨线图形的轨迹运动，再借助于电气、机械的联动，控制机床工作台连同工件相对电极丝做相似形的运动，从而切割出与图样形状相同的工件来；再一种是数字程序控制，采用先进的数字化自动控制技术，驱动机床按照加工前根据工件几何形状参数预先编制好的数控加工程序自动完成加工，不需要制作靠模样板也无需绘制放大图，比前面两种控制形式具有更高的加工精度和广阔的应用范围，目前国内外95%以上的电火花线切割机床都已采用数控化。切割属电加工范畴，是由前苏联人发明的，我国是第一个用于工业生产的国家，当时由复但大学和苏州长风机械厂合作生产的这是最早的机型叫复旦型，我们国内在此基础上发展了快走丝系统。欧美和日本发展了慢走系统LS

Combining with the characters of liner industry, the paper set up an evaluation index system. And then 15 liner corporations picked out from top 20s in container liner industry were evaluated synthetically with catastrophe progression method and set pair identical degree analysis method. Based the above evaluation, a contrast analysis between the core competence of the container liner corporation in our country and ones in other countries was conducted.

在此基础上，本文在全球运力排名前20位的大型集装箱班轮企业中选取了15家为研究对象，结合国际集装箱班轮运输业的行业特征，建立了核心竞争力评价指标体系，挑选了突变模糊隶属函数法和集对同一度分析法两种方法，对研究对象的核心竞争力进行了综合评价，并对结果做出了分析，同时，借助于核心竞争力评价指标体系，对我国集装箱班轮企业的核心竞争力状况进行了对比分析。

Nowadays in virtue of the developed CFD simulation analysis software—— STAR-CD ,The flow field of the pure water in the half-spirality suction chamber is simulated.

借助于现在发达的CFD模拟分析软件——— STAR-CD 对半螺旋泵吸入室做了纯水的三维模拟分析之后，又在不同含气率的情况下，对半螺旋形吸入室的流场进行了三维模拟分析。

One of his legs is broken,so he has to turn to a staff to walk.

他的一条腿跛了，走路借助于拐杖。

Finally, according to market conditions and market products this article paper analyzes the trends in the development of camera technology, and designs a color night vision camera.

最后根据市场情况和市面上产品的情况分析了摄像机技术的发展趋势，并设计了一款彩色夜视摄像机。

Only person height weeds and the fierce looks stone idles were there.

只有半人深的荒草和龇牙咧嘴的神像。