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Methods: Measuring the bone density of mandibular angle and coxofemoral region with dual energy X ray absorptiometer.

采用双能X线吸收测量仪，测量右侧髋部与左侧下颌角的骨矿物密度。

To evaluate bone mineral density of normal humans in Henan of China,BMD of whole body,lumbar vertebrae,upper and lower limbs and pelvis of 417 healthy subjects was measured by Hologic 4500W dual energy X-ray absorptiometer made in USA.Only BMD of limbs and pelvis was analyzed.

为了解我国河南地区正常人骨密度的数据，作者应用美国Hologic生产的双能X线4500W型骨密度仪，对417例正常人进行了全身和腰椎正、侧位检测，现就四肢和骨盆骨密度的测试结果加以分析。

Bone mineral density of whole femur were measured with a dual-energy x-ray absorptiometer. The three-point bending test was used to detect biomechanical properties of the femur.

用双能X线骨密度仪检测完整股骨骨密度，三点弯曲试验测试股骨生物力学性能。

Methods Two hundred and ninety seven middle-aged and aged females were sampled randomly from the cases who were examined in the bone mineral density measurement department of The Second Affiliated Hospital of Nanchang University from January 2004 to January 2006, and their age, stature and body weight were recorded exactly. The BMD of lumbar (L2~4), femoral neck, Ward's and great trochanter was measured by dual energy X-ray absorptiometer, then statistically analyzed.

从2004年1月～2006年1月在南昌大学第二附属医院骨密度测定室检测的就诊者中随机抽取297例中老年妇女，准确记录其年龄、身高、体重；采用法国DMS公司Challenge：双能X线骨密度测定仪检测腰椎(L2~4)、股骨颈、ward's三角以及大转子的BMD，然后进行比较和统计分析。

MethodsThirty-five GIO patients were enrolled. Ten milligrams alendronate were prescribed daily for 6 months. Bone mineral density was measured by dual-energy X-ray absorptiometer after and before the treatment.

以35例糖皮质激素性骨质疏松症患者为观察对象，每日服用阿仑膦酸钠10 mg，治疗6个月，治疗前后采用双能X线骨密度仪测定骨密度。

Compared with iodine, Gold has a larger atomic number and X-ray absorption coefficient.

金与碘相比，有着更高的原子序数和X射线吸收系数。

Based on the result of theoretical research the absorption coefficient curve of a substrate material has be ound,which ensure the three-channel BCCD work in the region of X-ray.

通过理论分析，找出了能保证BCCD在X光区工作的衬底材料所应满足的吸收曲线。

It is suggested that pair production may play an important role in the X-ray emission region which is formed by the accretion of a compact object.

本文提出：在致密星的吸积所形成的 X 射线发射区中，电子对的产生起着重要的作用。

Tolerances represent the highest commercial grade of accuracy and workmanship, and are specified for thread setting gages; X tolerances are larger than W tolerances and are used for product inspection gages.

公差是为螺纹调节规设定的，代表了精确程度及工艺方面的最好商业等级。X公差比W公差要大，用于产品检验量规。

In this paper, the influences of acetanilide content on the microstructure and macro properties of polyvinyl chloride were studied by means of differential scanning calorimetry, wide angle X-ray diffraction and scanning electron microscope.

利用差示扫瞄量热法、广角X-射线衍射和扫瞄电镜方法研究了乙酰苯胺质量分数对聚氯乙烯的结晶度、微观形态和宏观机械性能的影响。

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。