扫描时间应该比标记时间短得多。
The sweep time should be significantly shorter than the mark times.
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.
如果扫描时间很长，则应考虑缩小堆的大小或者采用gencon策略。
If the sweep times are very long, consider reducing the size of the heap or switching to the gencon policy.
那时候扫描时间十分漫长，而且在CT检查时高暴露于放射线。
That was an unreasonably long scan time and in the case of CT entailed very high exposure to radiation.
而且仅第一次，他就在短短几天的扫描时间里他就发现了上百种新化石。
And in only a few days of scanning he has revealed hundreds of new fossils for the first time.
为提高扫描效率和缩短扫描时间，在扫描之前实行了扫描预探测技术。
The detection before scan is carried out for the sake of increasing the efficiency of scan and shortening the time of scan.
结论TI是决定抑制效果的关键参数，TR、TE仅决定扫描时间和扫描层数。
Conclusion ti is the key parameter in determining the repression effect, TR and te only determine the scans time and layer number.
通过增加双时成像中第二帧扫描时间，可提高保留指数的可靠性和判别准确率。
The longer duration in the second frame of the dual scan increase the RI reliability and improve the diagnostic accuracy.
在本文中，我们设计并研制了用于毫米级精度人卫激光测距的圆扫描时间分析系统。
In this paper, a circular-scan time analyzer to be used in the satellite laser ranging system with ranging accuracy of submillimeter, has been developed.
目的：研究立体定向放射治疗肺癌中呼吸运动频率与图像扫描时间对靶体积定位成像结果的影响。
Objective: to study the effects of respiratory movement frequency and scanning time on the image results in the treatment of lung cancer by stereotactic radiotherapy.
结论：3d -FLASH序列合用水激发技术代替脂肪抑制可显著缩短扫描时间，而不降低图像质量。
Conclusion: in 3d-flash sequences, water excitation technique as an alternative to fat suppression can shorten scan time significantly, without decreasing image quality.
被合成的频率扫描信号的起始频率、终止频率和扫描时间可根据需要随意设定，并且可以实现对三者的精确控制。
Start frequency, stop frequency and sweep time of the signal synthesized by the method can be preset freely and controlled accurately.
在卫星光通信的链路建立过程中，粗瞄误差不对称度较高时，同样的扫描时间限制内分行扫描可以获得更高的捕获概率。
Giving the same limit for the acquisition time, a larger acquisition probability is obtained with the raster scanning during the link foundation when the coarse pointing errors asymmetry is high.
SignaHDX MR影像系统能够提高患者的舒适度，减少扫描时间，更快地得到结果，以及比以往更高清晰度的影像。
The Signa HDX MR imaging system allows for increased patient comfort, decreased scan times, faster results, and higher resolution images than ever before.
SignaHDX MR影像系统能够提高患者的舒适度，减少扫描时间，更快地得到结果，以及比以往更高清晰度的影像。
The Signa HDX MR imaging system allows for increased patient comfort, decreased scan times, faster results, and higher resolution images than ever before.
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