随着压杆柔度的减小,它的临界载荷会越来越高。( )
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
一端固定一端自由的细长(大柔度)压杆,长为L(图a),当杆的长度减小一半时(图b),其临界载荷F比原来增加:()
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