Dianci bileiqi, 1989 提出了动作电压到140kV有效值间隙距离到10cm的大功率放电间隙,它用于保护电器设备免受过电压危害.用于户外装置的放电间隙装于瓷套中,用半球状的石墨电极制成,电极固定在高导电率的金属支杆上.半球形电极上制有槽,以保证放电间隙的体积与电极内平面相联系.由于槽的存在,使电极间电弧放电发展时的气流在狭窄的极间范围内限制着放电可能的路径,以得到较有利的放电特性,该特性近似于通风壳体中球形电极放电特性 ...
doaj
[Effectiveness of staged therapy using external fixation frame for infectious nonunion near knee joint]. [PDF]
Zhongguo Xiu Fu Chong Jian Wai Ke Za ZhiWang Z +7 more
europepmc +1 more source
本发明公开一种激光诱导薄层浆料大间隙转移形貌调控方法，包括：在供体基体上涂覆不同厚度的均匀薄层浆料；并使薄层浆料面向接收基体，控制转移间隙即薄层浆料底部与接收基体的距离大于或等于500微米；利用高能量密度的激光光束聚焦在供体基体和薄层浆料界面；通过高扫描速度和高重复频率的扫描振镜，实现单脉冲激光诱导点轨迹加工；通过调节薄层浆料厚度和转移间隙比值大小(≤0.3；0.3~0.1；≥0.1)，可直接转移成形出不同直径、表面积、高度和体积以及截面形貌的单点阵列。本发明能够在大的转移间隙下 ...
李少霞 +5 more
core
[Removal of a fishbone foreign body from the root of the tongue using a translingual ventral approach: case report]. [PDF]
Hua Xi Kou Qiang Yi Xue Za ZhiLi C, Zhao S, Li Y, Han B, Zhang B.
europepmc +1 more source
[Application of femoral condyle sliding osteotomy in initial total knee arthroplasty]. [PDF]
Zhongguo Xiu Fu Chong Jian Wai Ke Za ZhiWang X, Ma J, Zhang S, Tan R.
europepmc +1 more source
[Clinical analysis of changes in the position of the condyle and temporomandibular joint after repair of mandibular defects]. [PDF]
Hua Xi Kou Qiang Yi Xue Za ZhiLi S, Tian X, Wu Y, Wang W, Tang Z.
europepmc +1 more source
[Aesthetic goals of hypospadias repair]. [PDF]
Zhongguo Xiu Fu Chong Jian Wai Ke Za ZhiTang Y.
europepmc +1 more source
[Effect of porous surface structure on fatigue strength of 3D printed zirconia]. [PDF]
Beijing Da Xue Xue Bao Yi Xue BanZhao J +6 more
europepmc +1 more source
[Risk factor analysis of excessive resection of facet joint after large-channel spinal endoscopic depression for degenerative lumbar diseases]. [PDF]
Zhongguo Xiu Fu Chong Jian Wai Ke Za ZhiYan T, Zeng J, Lin X, Li T, Wu C.
europepmc +1 more source
[Comparison of effectiveness between endoscopic and microscopic anterior cervical discectomy and fusion]. [PDF]
Zhongguo Xiu Fu Chong Jian Wai Ke Za ZhiHuang C +9 more
europepmc +1 more source