查询词典 pulsed

Photoemissive materials are now used forgenerating high brightness electron bea■s.Drivenby short-pulsed laser,these new cathodes willmeet the requirment of large rf-driven freeelectron lasers.

为了满足射频直线加速器及其驱动的大功率自由电子激光器研究的需要，以脉冲激光激发光电发射材料产生高亮度电子束的研究正日益受到重视。

BACKGROUND: Our early study has found that the effect of pulsed electromagnetic fields can promote the proliferation of the precartilaginous stem cells.

摘要背景：前期研究证实脉冲电磁场对前软骨干细胞增殖具有促进作用，但其作用机制不明确。

To study the biologicaleffect of pulsed electromagnetic fieldson the proliferation of Immunomagneticseparated human precartilaginous stem cellsin vitro.To establish immortalizedhuman precartilaginous stem cellsstrain and provided stable cell resource to studythe molecular mechanism of gene targeting on differentiation of PSCs.①The cells from the aborted fetus\'s metaphysis were digested by collagenase,the PSCs were isolated by magnetic-activated cell sorting,then were subculturedand amplified.

探讨体外分离、培养人前软骨干细胞的可行性，分析其表型特点；研究脉冲电磁场对免疫磁性细胞分选的人前软骨干细胞增殖的生物学影响；构建猿肾病毒40大T抗原基因(SV40Tag)介导的永生化人前软骨干细胞株，为下一步基因打靶研究其分化分子机制提供稳定的细胞来源。

In this paper, a nozzle electrode for propene activation was installed in the front of corona wires in order to enhance the role of propene in NO_x removal by pulsed discharge.

为增强添加剂丙烯在脉冲放电烟气脱硝中的作用，本研究在电晕线电极前增加了用于添加剂活化的喷嘴电极。

To investigate the molecular diversity of the avian Salmonella, 12 S. typhimurium strains and 12 S. pullorum strains were identified by automatic microbiological assay and their genomic DNA were digested by restriction endonuclease Xba Ⅰ and typed by Pulsed-Field Gel Electrophoresis.

为应用脉冲场凝胶电泳从分子水平上对禽源沙门氏菌之间的差别进行分析和研究，本研究采用自动微生物鉴定仪对12株疑似鼠伤寒沙门氏菌和15株疑似鸡白痢沙门氏菌进行了鉴定。

Methods:Pulpotomy and pulsed Nd∶YAG laser irradiation with different energy and exposure time on the exposed pulp tissues were performed in 3 dogs.

一组对照，一组切髓后激光照射断面，条件40Hz、60mJ(2.4W)，另一组切髓后激光照射断面，条件为40Hz、40mJ(1.6W)。各组均用盖髓剂盖髓。

Objective Pulsed wave Doppler tissue imagingwas used to quantitively analyse left ventricular systolic function before and after revascularization.

目的 采用脉冲多普勒组织成像技术定量分析血管重建术前后左心室的收缩功能。

The studies examining the management of cervical radicular pain suggest a comparable efficacy for RF and pulsed RF.

调查颈神经性根疼痛治疗的研究表明，RF和脉冲RF的疗效相当。

The flow convergence parameters were quantitatively and semiquantitatively compared with the regurgitant volumes、fractions and grades gained by pulsed Doppler and the modified Simpson role method.

将各射流及血流会聚参数与脉冲多普勒及改良Simpson氏法所求的返流量、返流分数分别作定量及半定量关系分析比较。

In order to investigate the electrotransformation condition of Sinorhizobium meliloti variable curve was devised by different cell cycles time,resuscitative buffer,electrotransfection buffer,pulsed electric field and resistance.

为了研究苜蓿中华根瘤菌电转化的条件，通过对不同的细胞生长周期、复苏缓冲液、电转缓冲液、电场强度和电阻对电转率影响程度来作出变化曲线，以确定电转化的最优条件，从而提高苜蓿中华根瘤菌电转化率。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。