铰接基础（Pinned Base）：刚架柱的柱脚与基础柱连接处被设计为可传递轴力和剪力，但不能传递弯矩的做法。
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pinned base plug 带剪切销的底塞
pinned column base 铰接柱脚
pinned base
固定的基础
以上为机器翻译结果，长、整句建议使用 人工翻译 。
The new revelations about the battle that engulfed Forward Operating Base Keating in Kamdesh District are a further indication of how pinned down and outmanned the troops were at the remote outpost.
CNN: Afghan insurgents pushed into U.S. base, official says
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