The book holder (10) can either be handheld or be placed or attached on a supporting surface.
书夹(10)可以手持或者置于或附装到支承面上。
The upper staple supporting surface supports staples of different wire diameters in an upright position.
所述上侧钉支撑表面将具有不同丝径的钉支撑在直立位置。
It is difficult to demolish structure which has lower height of gravity center, larger supporting surface and mortar rubble with demolition blasting in city.
在城市拆除爆破中，用小孔爆破法拆除重心很低、支承面大的浆砌片石构筑物难度很大。
Each staple driver has an upper staple supporting surface for supporting one of the staples such that, when actuated, each staple driver drives the staple into the anvil.
每个钉驱动器具有用于支撑所述多个钉中的一个的上侧钉支撑表面，当所述钉驱动器被致动时，每个钉驱动器将所述钉驱动至所述砧座。
Each staple driver has an upper staple supporting surface for supporting one of the staples such that, when actuated, each staple driver drives the staple into the anvil.
每个钉驱动器具有用于支撑所述多个钉中的一个的上侧钉支撑表面，当所述钉驱动器被致动时，每个钉驱动器将所述钉驱动至所述砧座。
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