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Based on Prandtl's momentum transportation, this paper calculates in detail the physical quantities such as eddy viscosities, and ratio of eddy viscosity to motion viscosity, total stresses with respect to relative position in three regions of viscous sub-layer, buffer layer, and main turbulent stream for non-Newtonian fluid flowing turbulently in ducts, which according to Karman's three layer models and measurement of fluid parameters in evaluation apparatus, discusses the influence of polymer drag reduction on flowing properties of non-Newton fluid, analyzes quantitatively principle of turbulent reduction phenomenon and condition of increasing reduction rate.

摘要以普兰德动量传递理论为基础，按照卡门的三层模型，通过室内模拟环道用0号柴油及加入减阻剂在圆管内的流动参数的测定，计算了非牛顿型流体管内湍流边界层的层流内层、过渡层、湍流中心的涡流粘度，涡流粘度与运动粘度比、总应力随相对位置的变化等定量参数，探讨了高分子减阻剂对非牛顿流体流动特性的影响，对湍流减阻现象的机理与增大减阻率的条件进行了定量分析。

This system uses the deuterium lamp as its blazed lamp-house, and makes mechanical turnplate in use of modulating light signal with two frequencies, which is drived by in-phase electromotor with constant velocity. A potomultiplier tube is used to conversion optical signal to electric signal. Using Lock-In Amplifiers to realize magnifying the metrical signal using difference method with two different frequencies. We also analyze its principle of each part of the apparatus and design the realization circuits of each part. The data analysis and the in-phase electromotor control circuits are fulfilled by SCM; the single chip control systems hardware interface and software design are given.

该系统的光路部分使用氘灯作为激发光源，用同步电机恒速驱动的机械盘调制出双频光信号，利用一个光电倍增管进行光电信号转换；信号处理部分采用锁相放大器实现信号双频差分处理，分析了其各组成部分的原理，设计了各部分的具体实现电路；使用单片机进行数据差分处理和电机控制，给出了单片机控制处理系统的硬件接口电路和软件设计。

A drilling apparatus (10) for earth boring operations is of the type having cutter blades (17, 18) mounted on a support body (12, 72, 82) at the lower end of a drill string and includes a novel arrangement of fluid bore sections (15, 23, 23', 63, 64, 65', 92) for delivering fluid under pressure into fluid discharge passages (50, 52) in each of the blades and a bifurcated pivotal mounting portion (16, 74, 91) on the body which enables the bore sections to supply fluid to the cutter blades through a ball joint (22) on the pivotal axis.

一种用于地面钻孔操作的钻井设备(10)，在钻柱的下端具有安装在支撑体(12，72，82)上的切割刀片(17，18)，并包括流体孔部分(15，23，23′，63，64，65，65′，92)和该支撑体上的分叉的枢转安装部分(16，74，91)的新颖结构，该流体孔部分用于在压力作用下将流体供给到每个刀片的流体排放通道中，该安装部分使的该孔部分通过枢转轴线上的球接头(22)能够将流体供给供给到该切割刀片。

Methods:We used ultra high frequency skin plastic operation apparatus to treat 148 cases of facial explosive powder thesaurismosis.

对148例面部爆炸粉沉着症患者用XH超高频皮肤整形仪治疗。

Using simulation software to simulate system could make up for the unappeasable condition of true experimental apparatus.

利用仿真软件对系统进行仿真可以弥补真实的实验设备所不能满足的条件。

Very simple apparatus with swinging pendulums and levers have demonstrated that energy CAN be extracted from centrifugal force, when an unbalanced oscillation between centrifugal force and gravity is created.

非常简单的钟摆摆动仪器和手段已经证明，能源可以从离心力中得到，当离心力和重力之间的不平衡振动。

Volatile flavor components of unfermented smelly tofu were extracted by a simultaneous distillation-extraction apparatus and analyzed by gas chromatography-mass spectrometry.

通过同时蒸馏萃取得到非发酵臭豆腐的挥发性风味物质，并通过气相色谱-质谱联用仪进行分析，共有49种化合物被检出。

Simulated data had be used to check these methods. Calculation results were quite satisfactory, in which exponential sampling, CONTIN and NNLS was suitable for unimodal and bimodal distribution. Based on the theoretical study, a PCS ultrafine particle size measurement apparatus was set up.

在以上理论分析的基础上，应用PCS理论研制了一台超细颗粒粒径测量装置，该装置在国内无关键专用设备----数字相关仪的情况下，采用软件辅以外围硬件设备替代数字相关仪，实践证明是有效的。

Application of our products involves a number of areas, main products are: all kinds of remote control IC (ASIC, a single remote control, the European-American version of a variety of universal remote controls, universal remote control air-conditioning, LCD Universal remote control, set-top box remote control learning remote control, etc.); appliance control IC (range hoods, electric cars, electric water heater, disinfecting cabinet, induction cooker, etc.); e-health products (massage chairs, a variety of physical therapy device, the high-potential therapeutic apparatus, etc.); other IC (camera remote control, 8 | 12 calculator, voice, calculator, solar calculator function, etc.).

我们产品应用涉及多个领域，主要产品有：各种遥控器IC（ASIC、单一遥控器、欧洲美洲版等各种万用遥控器、空调万用遥控器、LCD万用遥控器、机顶盒遥控器、学习型遥控器等）；家电控制IC（抽油烟机、电动车、电热水器、消毒柜、电磁炉等）；电子保健产品（按摩椅、各种理疗仪、高电位治疗仪等）；其它IC(照相机遥控控制、8|12位计算器、语音计算器、太阳能函数计算器等)等。

The avoiding technology mainly focuses on improving the reliability of component and parts of an apparatus, which cannot evade unplaned nework failures.

以提高元器件可靠性为主的避错技术并不能消除不可预测故障对计算机网络系统可靠性影响。

I will endeavour to find you some assistance.

我尽力帮你找人帮忙。

At first I only know bruck is the idol of American younglings, afterwards I returned back to Taiwan ,even in Beijing last year ,I saw her poster everywhere, I was so surprised at her charm.

起初我只晓得布鲁克雷德丝是美国少男少女崇拜的偶像，后来回台湾，甚至去年在北京，居然也四处看见她的海报，才惊讶她的魅力之大。