结论：行选择性脊柱手术的患者术后发生下肢深静脉血栓及肺栓塞风险相对低，尤其是应用药物预防的患者。
Conclusions The risk of deep venous thrombosis and pulmonary embolism is relatively low following elective spine surgery, particularly for patients who receive pharmacologic prophylaxis.
对策：公道用药，节制用药，研制高效低毒，低残留并有选择性的农药。
Countermeasures: fair use, temperance drug use, develop the risk-benefit ratio, low residue and selective pesticides.
三光气作为剧毒的光气和双光气在合成中的替代物，不但毒性低，使用安全方便，而且反应条件温和、选择性好、收率高。
The triphosgene, being as the substitute for phosgene and diphosgene in synthesis, is not only low-toxic but also safe and convenient to use with mild conditions, good selectivity and high yields.
与之相比，选择性低的索引就不那么有用了。
By contrast, an index that is not selective is not as useful.
此催化剂体系有良好选择性，用量少、成本低、对环境污染小。
The catalyst system have good catalytic selection, can decrease the production cost and reduce the pollution.
生物传感器具有选择性好、灵敏度高、分析速度快、成本低、能在复杂体系中进行在线连续监测等特点。
The biosensor has the good selectivity, the high sensitivity, the quick speed of analysis, the low cost and the continuous monitoring on-line in the complex system.
本文研究了低硫高冰镍常压选择性浸出的动力学过程。
In present work, a kinetic study on selective leaching of low-sulfur Ni-Cu matte at atmospheric pressure was conducted.
然后经过臭氧-过氧化氢漂白，结果表明：卡伯值越高，脱木质素选择性越差，白度上升值越低。
Then ozonic-hydrogen peroxide bleaching were carried out and the results show that the higher of Kappa number, the poor of the delignification selectivity and the lower of brightness rising.
但现有HDAC抑制剂效度低、缺乏选择性、药代动力学或毒性特征较差。
However, existing HDAC inhibitors can exhibit low potency, lack of selectivity, and poor pharmacokinetic or toxicity profiles.
尺寸小，功耗低，响应快，灵敏度高，选择性和稳定性好。
Small size, low power, fast response, high sensitivity, better selectivity and stability.
相反，过渡金属硫化物作为催化剂反应活性低、不容易中毒显示了很高的选择性。
In contrast, transition-metal sulfides are less reactive and susceptible to poisoning and can show higher selectivity.
该方法灵敏，简便，选择性好，线性范围宽，检测下限低。
The method is sensitive, simple, good selectivity and of wide linear range, low detection limit.
它具有频率选择性好，通带插损低，对陷波频点抑制较高的优点。
It is characterized by good frequency selectivity, low insertion loss and high attenuation of specified frequency.
使用RF功率调变控制该共沉积作用及该选择性硅去除步骤，后者步骤总是在关闭该R F功率或是将其降至低水准时进行。
RF power modulation is used to control the codeposition and the selective silicon removal steps with the later proceeds whenever the RF power is turned off or reduced to a low level.
采用传统分离方法无法实现对结构类似化合物的精确分离，膜分离方法也存在着选择性低的不足。
Flavonoids with similar configuration can not be separated by traditional separation method and membrane separation technology whose selectivity is lower.
一定条件下该硝化剂具有较好的反应位置选择性，这一是由于反应介质低的介电常数，二是多孔载体也具有明显的作用。
In this system good regioselectivity can be achieved mainly because of the existence of a porous support and the low dielectric constant of the reaction media.
本发明具有环境友好的，生产成本低，产品选择性高的优点。
The invention is environmentally-friendly and has low production cost and high product selectivity.
动物试验结果表明，本发明的磁共振肿瘤靶向对比剂，选择性好、增强效果明显、毒副作用低。
Animal experiments show that the magnetic resonance tumor targeted contrast agent has good selectivity, obvious enhanced effect and low toxic and side effects.
该太阳能选择性吸收膜的效能可以符合高吸收率、低放射率原则。
The efficiency of the solar selective absorption film complies with the principles of high absorptivity and low emissivity.
氢转移反应越低，丙烯及丁烯等烯烃选择性越高。
Propylene and butylene yields increase with low hydrogen transfer reaction.
报道了溶剂对钯催化的叔丁基乙炔低聚反应化学选择性的调控作用。
A novel solvent-controlled chemoselective palladium-catalyzed oligomerization of tert-butyl acetylene was reported in this paper.
本发明所述催化剂具有催化活性高、选择性好、稳定性良好、环境友好、制备简单、成本低的优点。
The catalyst has high catalytic activity, good selectivity and stability, environment protection, simple preparation and lower cost.
通过与XJN-14型浮选机对比，表明FJC20型浮选机浮选选择性好、处理量大、泡沫浓度高、电耗低、占地面积小、购置费用低。
In comparison with XJN-14 flotation machine, it gives such merits as high selectivity, large throughput, high solid content in froth, low energy consumption, less space required and low first cost.
摘要：以苯酚为液化试剂，在低温和低酸催化剂浓度等温和条件下对竹粉进行选择性酚化，分离得到液化液和竹纤维素微粉。
Abstract: the thermochemistry selective liquefaction of bamboo powder in phenol was carried out under lower temperature and lower acid-catalyzed concentration.
主动脉弓成形均在深低温低流量持续性选择性脑灌注下进行。
Aortic arch reconstruction was performed by hypothermic continuous low flow bypass using regional perfusion for all patients.
主动脉弓成形均在深低温低流量持续性选择性脑灌注下进行。
Aortic arch reconstruction was performed by hypothermic continuous low flow bypass using regional perfusion for all patients.
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