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The surface of clay was modified by using octadecyl ammonium and the structure of clay after modification was characterized by using X-ray diffractometer , thermogravimetric analyzer and Fourier transform infrared .

为了使得硅酸盐片层同所有高聚物基体之间有相容性，通常需要将亲水性的硅酸盐表面转化成具有亲有机物质的性质，让许多工程高聚物能够插入。因此，用十八烷基胺改性粘土表面，改性后的粘土结构通过XRD、TG、FTIR表征。

Using the limit definition of Fourier transform, the paper has proved the universal form of Fourier transform differential and integral characteristic theorem, explained its application method, and pointed out that errors can be substantially reduced by using this method.

提要：本文采用Fourier变换的极限定义式，证明了普遍形式的Fourier变换微积特性定理。

Based on a sinusoidal input, force and displacement expressions of a damper are formulated by using the fractional derivative Maxwell model. The mechanical property of the damper is analyzed using these expressions.

在正弦输入的假设下，推导了用分数微分Maxwell模型建模粘弹性阻尼器时力和位移的表达式，并用该表达式分析了阻尼器的力学特性。

The first one is using digital camera and the other one is using CCD camera combining with Frame grabber.

另一种是采用CCD摄象头配合OK-C20图象采集卡对微小昆虫或虫卵图象进行计算机的实时图象获取。

By use of the method of integral equation, the second kind Fredholm's integral equation was deduced to solve the interaction factors of pile-pile, pile-soil and soil-soil. Using the principle of superposition, the piled raft foundation was calculated. The validity of the proposed method was verified through comparison with solutions obtained using other methods by existing theories of elasticity.

采用积分方程法推导出求解桩－桩、桩－土和土－土间相互作用系数所需要的第二类Fredholm积分方程，利用叠加原理对桩筏基础进行计算分析，通过与常规弹性理论方法计算结果的比较验证了本文方法的正确性。

The procedures using levator muscle were for the mild or moderate blepharoptosis and the procedures using frontalis muscle were for the moderate or severe blepharoptosis.

利用提上睑肌的术式是矫正轻、中度上睑下垂的首选方法，利用额肌力量的术式适用于中重度上睑下垂。

Concrete and other hydraulic cylinder used new technology and new technologies, using concrete cylinder block IF processing technology, using carbon and nitrogen sulfur fuel tank rod permeation technology, the service life of the fuel tank and concrete cylinder life greatly increased.

另外液压油缸和砼缸采用新工艺和新技术，砼缸缸体采用中频处理技术，油缸活塞杆采用碳氮硫共渗技术，使油缸使用寿命和砼缸使用寿命大大增加。

The howitzer has a maximum firing range of 22km when using the NORINCO Extended-Range, Full-Bore, Hollow-Base round, or 27km when using the NORINCO Extended-Range, Full-Bore, Rocket-Assisted round.

当使用中国北方工业总公司增-程，全内径，空心-底排弹药时最大射程22公里，或当使用中国北方工业总公司增-程，全-内径，火箭助推弹药时27公里。

By using an abstract rooted network data model, GIES uniformly organizes and stores all kinds of structured objects processed by the environment system, and provides a set of uniform, general purpose full-screen editing system commands in order that users can process and treat each of the environmemt components effectively by using the same set of editing ...

它通过一个抽象的有根网络模型统一地组织和存贮环境系统所予处理的各种结构化对象，并相应地备有一组通用一致的全屏幕编辑命令，以便于用户能够利用同样的命令和操作，对环境系统的各项成分进行有效的加工和处理，力求用户接口界面的简明与友好。本文主要论述GIES的基本设计思想、系统组成和实现概况。

Lastly,Using the extension theory of〓-algebras founded and developed by Brown-Douglas-Fillmore in 70s,inparticular,using the homotopy invariance of the extensions and the indexformule of Toeplitz operator matrices,the paper characterized the automorphismgroup of the continuous function symbol Toeplitz 〓-algebra in terms of thetopological degrees of the continuous mappings on the n-dimensional sphere.

最后，本文利用Brown-Douglas-Fillmore在七十年代建立并发展起来的C*-代数扩张理论，尤其是扩张的同伦不变性，以及Toeplitz算子矩阵的指标公式，通过球面上连续映射的拓扑度，刻划了高维球面Hardy空间上连续符号Toeplitz 〓代数的自同构群。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。