可测量的

BMD measurement of femoral neck without external reference phantom based on QCT data is an effective and feasible method, both MVM and LVM selected as internal reference is more convenient and has no difference comparing with erector spinae as internal reference.

基于QCT数据应用CAD无体模软件具有与有体模方法和DXA方法相同的测量BMD的能力，其中采用便捷的股内侧肌、股外侧肌作为内部参考具有与竖脊肌相近的结果，能够为医生提供BMD的参考信息，可用于骨质疏松的诊断、健康普查。

In this system, the wavelength of the narrow-bandwidth optical source from the Fabry-Perot tunable filter and broadband source could be adjusted by the digital signal processor after the operating point is changed. Moreover, the influence of the factors such as the instability of the light source and the slowly unaccelerated aging of the system, can be eliminated or decreased by the auto-calibration method based on the software.

该系统利用数字信号处理器控制可调珐珀滤波器自动输出波长满足工作点要求的窄带光，同时还通过软件校准的办法消除了因光源的不稳定、系统老化等缓变因素引起的信号波动对测量结果的影响。

The Laser Doppler vibrometer and signal generator are controlled by computer through GPIB bus, in order to make the system more automatic and compatible. A synchronous method for exciting signal and data acquisition is advanced and put into practice in the process of microstructures'free damping vibration.

通过GPIB总线控制激光多普勒测振仪的控制器和信号发生器以提高测试过程的自动化程度，使建立的自动化测量系统具有良好的通用性和可扩展性，并提出了自由衰减法测试的激励信号和数据采集卡同步采集的实现方法； 3。

First it changed the variety of capacitive into the variety of voltage by charge amplifier ,then demodulates the carrier wave signal modulated by the accelerometer signal and passed thought the low pass filter ,at last ,output a direct current signal which is directly proportional the accelerometer signal ,the circuit has the function of measuring the variety of capacitive and the specialties of higher sensitive and better linearity.

介绍一种可用于微机械电容式加速度计检测的接口电路，该电路利用电荷放大器把电容变化转变成电压变化，再对被加速度信号调制的载波信号进行解调，经过低通放大滤波，最后得到与加速度信号成正比的直流电压信号，具有测量差分电容变化的功能和灵敏度高、线性好的特点。

"Long-term skin cancer and actinic keratoses surveillance continue to be important,and repeated resurfacing procedures or courses of topical agents,such as fluorouracil or imiquimod, may be necessary," the researchers write."A largerstudy comparing trichloroacetic acid resurfacing for actinic keratoses reductionand nonmelanoma skin cancer prophylaxis would help validate the superiority ofthis resurfacing technique over the carbon dioxide laser andassess its cost-effectiveness compared with photodynamic therapyor imiquimod treatment." They cite improved patient compliance in the trichloroacetic-acid group, ease of performance in the outpatient setting, andsubjective measures of better tolerance as reasons this procedure is an attractive alternative to repeated courses with topicalagents or laser resurfacing.

研究者指出，长期皮肤癌和光化性角化病之监测仍是重要的，反覆的皮肤重建整形步骤、或外用制剂如fluorouracil 或 imiquimod的反覆疗程也可能是必须的；一个比较三氯醋酸皮肤重建整形以减少光化性角化病和预防非黑色素皮肤癌的大型研究，将可有助於确定其优於二氧化碳雷射的优势，以及评估其和光动力治疗或 imiquimod治疗之花费效益比比较；他们举例说，三氯醋酸组病患之遵医嘱性增加、门诊病患也容易进行、个案之测量耐受度比较佳，这些都是重复疗程时比外用药剂或雷射更有吸引力的理由。

Finally the energy distribution of the spot was reconverted and obtained through computer processing of the measurement data.

实验中采用扫描法测量光斑的能量分布，通过柔性铰链机构带动微米级小孔以很小的步距对成像微光斑进行精确的二维扫描，用光电倍增管接收扫描采样的微弱光信号，再以低噪声的I/V转换电路和电压放大电路处理取样信号后送入计算机处理，就可准确地复原光斑的能量分布。

During hollow spindle spinning, the yarn package rotates at a high speed, yarn untwists from the package and forms a balloon. The yarn balloon phenomenon exists commonly in spinning processes. The shape of yarn balloon is a general displacement of the forces acts on the balloon yarn. There is a close relationship between the yarn balloon shape and the forces acts on the balloon. The balloon shape is decided by the spinning force, on the contrary, we can find the value of the spinning force according to the yarn balloon shape. To a great extent, the spinning tension impacts the yarn structure and quality.

空心锭子纺纱过程中，纱线卷装随锭子高速转动并退绕，因而产生了气圈现象，气圈是纺纱过程中比较普遍的现象，气圈的形态是纺纱过程中气圈纱线受力的综合体现，纱线张力与气圈形态密切相关，纱线张力决定了气圈形态，反之则可根据气圈形态算出纱线张力，纺纱张力在很大程度上会影响成纱的结构和质量，而纺纱张力不便直接测量，因此通过观察气圈形态来估计纺纱张力是十分可行的。

The paper, concerning the characteristic of engineering and geology, studied the creation of the Xiaolangdi multipurpose project safety-monitoring system. A zoned monitoring system under the control of unique baseline has been proposed. Manu possible monitoring methods, especially, the accuracy of collimation axis、 intersection、 olar coordinate, have been studied in detail to provide the theory foundation of the application of intelligent otal-station instrument automatic monitoring system on Xiaolangdi project.The application of intelligent otal-station instrument, TCA2003, and digital water level,DiNil2, on the dam safety monitoring as well as data automatic recording have been researched extensively. All this research provide the valuable experience to in-situ data collection, automatic transferring, data analysis and treatment and management.

本文结合小浪底工程特点和地质情况，研究了小浪底水利枢纽安全监控基准体系的构建，提出了统一基准控制下的分区测控系统思路；详细研究了可用于小浪底大坝外部变形监测的多种方法，重点分析了极坐标法、交会法和视准线法的精度，为智能型全站仪自动监测系统在小浪底的应用提供了理论依据；重点研究了自动全站仪TCA2003和数字水准仪DiNi12在大坝安全监测中的应用；同时研究了测量信息自动化采集处理系统，为外业监测信息的采集、自动传输和及时处理、管理创造了有利条件。

So the death age of the youngster and infant can be inferred through the length of the tooth, that is, through repeatedly measuring 100 teeth, use math physical statistics methodology to infer dental length and age regression equation, then put the length of the tooth taken from the scene and the type into the equation, and the death age can be inferred.

因此 ，可以利用牙齿长度来推断青、幼年人的死亡年龄。即通过重复测量 10 0颗牙齿，利用数理统计的方法，推导出牙齿长度与年龄的回归方程。然后，将现场提取的孤立牙齿的长度值与种类代入该方程，便可推算出死亡年龄。

In order to reduce the effect of probe errors in near-field antenna measurement, the solutions are proposed as follows: On the one hand, theoretical formula of probe-compensated is derived; on the other hand, drop-shaped probe is designed and near-zone gain, far-field patterns, axial ratio, main lobe width, input impedance, voltage standing-wave ratio, electromagnetic field and current distribution of probe are obtained through the computer simulation.

针对近场测量中的重要误差源之一&探头&的影响，本文提出解决方法：一方面用探头补偿的方法，根据洛仑兹互易定理和微波网络理论对补偿的解析式进行详细推导；另一方面用两种不同的仿真软件求解终端开口矩形波导探头的近场增益、远场方向图、轴比、主瓣宽度、输入阻抗、电压驻波比、电场分布、磁场分布、表面电流分布等特性参数，可实现探头增益的修正。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。