Results 61 to 70 of about 3,381 (116)

[How I treat vasovagal syncope in children]. [PDF]

Zhongguo Dang Dai Er Ke Za Zhi
Zou RM, Wang C.
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金属氧化物避雷器对切断电感电流操作过电压的限制

Gaoya dianqi, 1987
本文利用计算机对MOA限制切断感性电流操作过电压特性进行了计算,其结果对规定操作冲击下MOA试验电流及开关恢复电压的波形有较大的参考意义。
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[Emphasizing evolution of key technological elements in reconstructive surgery]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Zan T, Li Q.
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[Perioperative management of a patient with Kennedy disease undergoing knee replacement: A case report]. [PDF]

Beijing Da Xue Xue Bao Yi Xue Ban
Bai P, Zhang H, Wang J, Zhu H, Zeng H.
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[Management of accidental tooth root displacement into the mandibular canal during tooth extraction]. [PDF]

Hua Xi Kou Qiang Yi Xue Za Zhi
Su L, Zhao J.
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美国通用电气公司的新型空气断路器

Gaoya dianqi, 1959
美国通用电气公司的115～460仟伏高压空气断路器的特点为开断迅速,能承受输电线路最大的电压恢复速率。断路器应用压力灭弧原理 ...
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[Eccentric kyphotic distraction reduction technique for treatment of lower cervical dislocation with locked facet joints]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Li Y, Li X, Li B, Yan X, Ding R, Cui W, Wang H.   +6 more
europepmc   +1 more source

[Establishment of a canine model of vascularized allogeneic spinal cord transplantation and preliminary study on spinal cord continuity reconstruction]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Chen J, Lan R, Zhang W, Qin J, Hu W, Wang J, Ren X.   +6 more
europepmc   +1 more source

[Arthroscopic-assisted closed reduction and internal fixation with absorbable screws for Hawkins type <b>Ⅱ</b> talar neck fractures]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Dong Z, Cao Z, Dong H, Jiang H, Shi L, Zhang Y, Sun J.   +6 more
europepmc   +1 more source

SF₆在大容量断路器中的应用

Gaoya dianqi, 1958
SF6气体具有良好的絕緣性能和灭弧性能。这种性能主要是由于SF6分子能快速的吸收間隙中游离气体中的自由电子。 用質子——光譜带有力的表明了SF6有形成負离子SF6和SF6的显明趋向。这两种离子質量很大,导电性不好,因而,SF6的击穿电压超过空气的击穿电压2,4倍。 但是,对于可靠地熄灭交流电弧来說,气体的击穿电压还是次要的。当电流通过零值时,灭弧介質首先应該有高的耐压强度恢复速率。間隙强皮的恢复速率或者間隙导电性的减少可以闡述为电弧的时間常数。从物理观点来看 ...
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