有效

Make a/no/some difference to, have a/no/some difference on sth.

对…有效，无效，有些效果，对…重要，不重要

Results demonstrated that by deft use of its ultrasonic lithotripsy tools, automatic lavage-aspiration system and stone extractors made the maneuvre safe, swift and effective. If it is cooperated with fibro-choledochoscope the results would be further improved.

结果证实经皮胆囊镜由于配有超声碎石系统、自动冲吸系统，应用灵活的碎石取石器械，使肝胆管结石或残石的处理变得安全、快速、有效，配合多种纤维胆道镜治疗时更能明显提高其治疗效果，扩大治疗范围。

Not only the mifepristone with misoprostol mellowly to be able to terminate is pregnant early, but also may apply effectively in the termination intermediate stage pregnancy, the security,the time short, reduces the placenta membrane remain rate.

米非司酮配伍米索前列醇不仅能终止早孕，还可应用于终止中期妊娠，安全、有效。引产时间短、降低胎盘胎膜残留率。

Con-clusion Microwave endometrial ablation is a safe and efficient operation for treatment of menorrhagia with severity medical department disease.

微波子宫内膜去除术治疗合并严重内科疾病的月经过多安全、有效。

LAVH can expand the operation scope, and is a safe, effective and valuable modus operandi.

LAVH扩大了子宫切除的手术可选择范围，是一种安全、有效、有推广价值的子宫切除方式。

The surgical operation reserving nephron for kidney cancer is safe and effective.

肾癌保留肾单位手术安全、有效，适合于对侧肾功能正常、一侧局限的偶发肾肿瘤患者。

"Community newspapers certainly are not immune to the economic downturn that is affecting all businesses, but, as the primary and sometimes sole provider of local news in a community, they remain strong and viable," NNA president John Stevenson said in the article.

"社区报纸肯定不会完全免于影响到一切行业的经济下滑，但是，作为在一个社区当地新闻主要，有时候唯一的提供者，他们依然保持强劲、有效。"NNA主席John Stevenson在文章中称。

A safe, effective, and easy to use warfarin initiation dosing nomogram for post-joint arthroplasty patients

一种安全，有效，简易的供关节置换术后患者使用的华法林初始计量图

Based on image we study the tool path generation technology and problem of tool path planning. We put forward an algorithm for self-discrimination of island relation and an automatic intersected method of the region machining unit, which can judge the relationship among any plane obturate contour line effectively and swiftly. We also study the tool path generation technology of two-dimensional machining, basso-relievo machining, three-dimensional lifting-pen machining. Meanwhile, we put forward an optimize approach of tool path, which improve the efficiency of engraving.

研究了图像的刀具路径生成技术与轨迹规划问题，提出了基于射线的岛屿关系自动判断和区域加工单元的自动分割方法，有效、快速地判断了平面任意封闭轮廓线之间的关系，研究了平面任意区域填充加工、浮雕加工、三维提笔加工的刀具路径生成的技术，提出了刀具路径优化方法，提高了雕刻加工的质量和效率。

We put forward an algorithm for self - discrimination of island relation and an automatic intersected method of the region machining unit , which can judge the relationship among any plane obturate contour line effectively and swiftly . we also study the tool path generation technology of two - dimensional machining , basso - relievo machining , three - dimensional lifting - pen machining . meanwhile , we put forward an optimize approach of tool path , which improve the efficiency of engraving

研究了图像的刀具路径生成技术与轨迹规划问题，提出了基于射线的岛屿关系自动判断和区域加工单元的自动分割方法，有效、快速地判断了平面任意封闭轮廓线之间的关系，研究了平面任意区域填充加工、浮雕加工、三维提笔加工的刀具路径生成的技术，提出了刀具路径优化方法，提高了雕刻加工的质量和效率。

The United Kingdom has pledged to provide technical assistance to the peacekeeping effort in Darfur, including airlifting supplies and equipment to assist the African peacekeepers.

英国承诺为达佛的維和努力提供技术帮助，包括提供非洲的維和部队空运补給和裝备。

Results: The level of ET-1mRNA in placental villus was significantly higher in pre-eclamptic women than that in control group.

结果：妊高征组患者胎盘绒毛组织ET-1 mRNA的表达较正常妊娠组明显增高。