access shaft

基本解释

Bearing inner ring (shaft circle) of the basic cylindrical hole or holes in the internal tapered cylinder or cone in the axis line access.
轴承内圈（轴圈）的基本圆柱孔或圆锥孔的内接圆柱体或内接圆锥体的轴心线。
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There is no need to lift the shaft, or obtain access to the shaft ends, therefore expensive and awkward to handle lifting equipment is not required.
没有必要取消骨干，或获得轴两端，因此昂贵和尴尬的处理起重设备并不是必需的。
By removing a projecting body of the interior façade, it was possible to place the new access core in the central space, which was an air shaft by the party wall on the right.
通过挪去内墙面上的一个凸出物，就有可能在过去曾经是右边界墙边上的通风井的中央空间中填埋一个新的芯体。
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Hecla has also begun preparatory work for sinking of No. 4 Shaft, which is planned to access extensions to reserves, resources and additional exploration targets.
FORBES: Update:Hecla Plans To Reopen Lucky Friday Mine In 1Q; Loss Reported In 3Q
The shaft is a mile deep and the primary access to the Lucky Friday Mine.
FORBES: Hecla Officials Anticipate Clean-Up Of Mine Shaft Can Begin In Few Weeks