一个表中有太多列比仅有一些列时进行查询所需的扫描时间要长。
Too many columns in a table can make the scan time for queries much longer than if there are just a few columns.
典型的岩石核有几米长，因此首先要采用标准医学扫描仪对其进行粗略的CT扫描。
A typical core is several metres long, so it is first subject to a rough and ready ct scan using a standard medical scanner.
300米长没有任何中心支撑的透明屋顶，能显示结合PET扫描活体功能信息与CT扫描解剖图像整体的仪器，受冲击时自行销毁以免伤人的汽车保险杠，等等。
A transparent roof spanning 300 meters without any central supports. A device to display integrated anatomical information from a ct scan with live functional information from a PET scan.
本文介绍一种长导轨直线度激光扫描快速测量的新方法。
This paper described a new method for fast detecting the straightness of long guideways using a scanning laser beam.
扫描平面有短轴面、四腔面和长轴面。
Scanning plane included short axis view, four-chamber view, and long axis view.
本文提出了线性电压扫描下长产生寿命的快速测量方法。
A method for rapidly determining long generation lifetime under linear voltage sweep was presented.
扫描电镜可见细胞在PGA纤维上生长良好，呈长梭形。
Scanning electronic microscopy showed that cells with spindle shape spread on PGA fiber.
扫描开始时间应以74秒前后为佳，持续观察时，扫描间隔时间宜长，且不会错过观察时机。
The best scanning time is about 74 seconds. On continuing observation, the scanning interval should be a little longer and it will not lose the time of observation.
这些提供卓越的扫描性能，即使长触控笔。
These provide exceptional scanning performance, even with long styli.
结果34例患者肩关节磁共振成像扫描发现：肩袖完全撕裂、肩袖部分撕裂、肌腱炎、盂唇撕裂、滑膜炎、关节积液、肱二头肌长头腱鞘炎及肌腱脱位、肿瘤等。
Results MRI of shoulder in 34 cases showed full-thickness and partial-thickness tears of the rotator cuff, tendinitis, glenoid labrum tear, synovitis, biceps tendinitis, biceps dislocation and tumors.
采用非等温差示扫描量热法(dsc)研究了一种长侧链取代液晶环氧单体与甲基六氢苯酐的固化反应历程，考察了体系的固化反应动力学特征。
A liquid crystalline epoxy monomer with long lateral substituent was cured with anhydride and the cure kinetics was investigated by non-isothermal DSC technique.
当扫描层面和它们的长轴平行时，肺动脉分支和支气管呈圆柱状或远端变细分叉，这取决于它们在扫描层面内的长度和走行。
When imaged along their axis, bronchi and vessels should appear roughly cylindrical, or show slight tapering as they branch, depending on the length of the segment that is visible.
同时它还具有体积小、重量轻、噪声低、自扫描、工作速度快、测量精度高、寿命长等诸多优点，因此受到人们的高度重视，在精密?。
It shows this equipment has simple structure and high measurement accuracy, the result on the seven segment LED is demonatrated by using the single-chip microcomputer to count the elements.
同时它还具有体积小、重量轻、噪声低、自扫描、工作速度快、测量精度高、寿命长等诸多优点，因此受到人们的高度重视，在精密?。
It shows this equipment has simple structure and high measurement accuracy, the result on the seven segment LED is demonatrated by using the single-chip microcomputer to count the elements.
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