closed string boundary conditions 闭弦边界条件
Closed String Conformal Field Theory 闭弦共形场论
closed string stair 封闭式踏板楼梯
The Closed String Spectrum 闭弦谱
closed gas lift string 闭式气举管柱
closed pipe string 末端封闭的管柱
closed stair string 封闭式楼梯斜梁
closed gaslift string [油气] 闭式气举管柱
half-closed gas lift string 半闭式气举管柱
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