Mr Wang Delin was obsessed with calligraphy from he began studying in Xi 'an institute of geological.
王德林先生早在西安地质学院求学时就迷恋上了书法。
There is a road about 20klio meters long called "DeLin avenue" in GuYuan City Ningxia mountainous area;
在宁夏山区固原市，有一条长约20公里公路叫做“德林大道”；
In early 2002, Mr Wang Delin has already successfully held individual calligraphy art exhibition, in Beijin university centennial hall.
早在2002年王德林先生就在北京大学百周年纪念讲堂成功举办了个人书法艺术作品展。
Ren Delin had extended it to long needle problem, who cancelled the limitation (the diameter of the convex domain is less than the distance of the grid of parallel lines).
任德麟作了进一步推广，即取消凸域直径不超过带域间距离这一限制。
Ren Delin had extended it to long needle problem, who cancelled the limitation (the diameter of the convex domain is less than the distance of the grid of parallel lines).
任德麟作了进一步推广，即取消凸域直径不超过带域间距离这一限制。
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