查询词典 X-rays

To solve this problem, according to the analysis of the quality factors of the X-ray, the measurement for X-ray tube voltage/current is presented based on Q-factor and its derived QL and QH-factor when X-ray tube energy bandwidth is defined.

针对传统的管电压/管电流测量方法虽然可以检测出X射线管电压/管电流误差值，但不能反映其质量特征的状况，在分析影响X射线质量高低的因素的基础上，引入了射线管能量带宽的含义，并由此提出了基于Q值及其派生QL值、QH值的射线管电压/管电流分析方法。

objective:to study and analyze the features of lower limb fatigue fracture in the special force by means of radiodiag-nosis.methods:anterior-posterior and lateral films and clinical follow-ups were made to all the affected limbs in the56cases of lower limb fatigue fracture from june2003to feb.2006.results:through medical history and radiodiagnosis all the cases were giv-en definite diagnosis,achieved good treatment results and all had clinical follow-ups.the average length of clinical follow-ups was3months.following treatment,all patients returned to work and resumed training.conclusion:lower limb fatigue fracture finds a rather high incidence in the special force.special features could be seen in the x-ray film,which has obvious clinical significance in the differential diagnosis of other diseases.

摘要］ 目的：分析特种部队下肢疲劳骨折的x线特征性表现和鉴别诊断。方法：从2003年6月～2006年2月，对56例来院就诊治疗的下肢疲劳骨折的患者全部进行患肢x线正侧位片检查和随访。结果：本组病例依据病史和x线分析，均明确诊断，经治疗后效果好，全部获得随访，平均随访时间3个月；骨愈合时间1～2个月，全部恢复工作和训练。结论：下肢疲劳骨折在特种部队发病率高，x线片中具有特征性表现，与其他疾病的鉴别具有重要的临床意义。

METHODS Within a three-year period,510 cases of X-knife treatment were taken,using the standard axial serial CT scan for stereotactic localization.The target was localized by the BRW coordinate system,Radionics RSA-3 X-knife treatment planning system was adopted to make plan,and Philips SL-75-14 Linac was used to produce X-ray.

用CT薄层连续扫描图像定位，采用BRW立体定向坐标系统，Radionics RSA-3型X-刀治疗计划系统，Philips SL-75-14医用电子直线加速器，对510例颅内疾病患者实施X-刀治疗。

The slope estimate is the sample covariance between x and y divided by the sample variance of x.

斜率估计量等于样本中x和 y 的协方差除以x的方差。若x和 y 正相关则斜率为正，反之为负。

CP9 (X = 501 860, Y = 705 035); thence in a southwesterly direction to Corner Point No.

Eailroad Area的东北边的两个区域：第一个区域：从隅角点CP7（X = 501 810，Y == 705 010）起，边界线向东北方向延伸至隅角点CP8（X = 501 840，Y = 705 050）；从该点起向东南方向延伸至隅角点CP9（X = 501 860，Y = 705 035）；从该点起向西南方向延伸至隅角点CP10（X = 501 785， Y = 704 935）。

The project involved:(1) Development of time and space resolved soft x-ray diagnostic instruments: a pinhole transmission grating streak spectrograph and a stigmatic grazing incidence grating flat-field streak spectrogrph, which are the most powerful in x-ray laser and laser plasma researches of our laboratory.

它们已成为我们实验室X射线激光和激光等离子体软X射线发射实验研究中最有力的诊断手段。（2）系统地研究了X射线激光增益介质—线状激光等离子体的均匀性。结果表明线聚焦激光照明的均匀性是实现均匀线性状激光等离子体的必要条件。

Work was also carried out. From numerous facts of ourprevious work, it might be seen that the stereoselectivity of aziridination viasulfonium ylides depends upon the sulfonium salts and C=X compounds. The moreactive the sulfonium ylide and C=X compound are, the more cis product is generated.Whereas, trans product will be major if the activity of the sulfonium ylide and C=Xcompound is low.

通过对以往工作的总结，我们发现，在经由硫叶立德途径的小环化反应中有一个经验规律：产物的立体选择性与所用的锍盐和C=X化合物有关，即锍盐和C=X化合物的活性增强，有利于形成顺式产物，反之，锍盐和C=X化合物的活性降低，有利于反式产物的形成。

In the experimental study, 12 joints tests are completed, including 5 uniplanar X joints loaded with axial forces, 3 uniplanar X joints loaded with in-plane bending, 4 multiplanar XX-joints loaded with axial forces, with the emphasis on the influence of β and the existence of the out-of-plane braces, of which the multiplanar XX-joints tests is the first experiment project in china.

试验重点研究节点支主管宽度比β以及平面外支管荷载等因素对节点性能的影响，共进行了3个足尺方管平面X型受压节点，3个足尺方管平面X型受弯节点、2个方、圆管杂交平面X型受压节点和4个足尺方管空间XX型节点试验，其中方管空间XX型相贯节点试验是国内的首次试验。

To say that X educates or is educating Y is to say at least that X is fostering desirable and morally unobjectionable dispositions in Y by the use of methods that are also desirable and morally unobjectionable, or at least that X is cultivating dispositions in Y by certain methods.

我们说 X 教育或正在教育 Y ，意味着至少 X 正在使用无可争议的符合意愿的和道德的方法，在 Y 身上培养着无可争议的符合意愿的和道德的性状，或者至少 Y 用某种方法正在培养 Y 的性状。

The oxygen uptake activity using Triton X- 100 as substrate in a resting cell experiment demonstrated that one of the isolates, P nitroreducens TX1, showed the highest activity to transform Triton X-lOO, 528 nmole/min/g cell wet weight among the isolates. The generation time of strain TX1 was only 1.2 h by using 0.5% of Triton X-100 as sole carbon source in MSB medium. Furthermore, this strain could even grow on the Triton X-l00 at a concentration of IO%-2O%.

本研究藉由测定各菌株分解TritonX-100时的氧气消耗活性发现，编号82.10.6之菌株，经鉴定并命名为P.nitroreducens TX1，每克湿重的菌株具有528 nmole /min的高耗氧活性，尤其，该菌株以0.5%的TritonX-100培养时，世代时间仅为1.2小时，即使在10%-20%的Triton-X-100的培养环境中亦能维持生长，在过去相关研究中均尚未发表有此一特殊之生长特性。

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。