这是加仑与升的换算公式。
与升板机的技术性能一样，只是运转方向相反，用于将养护好的产品降下进行码垛。
The same technical data as chain elevator, which is lowerate the pallet with the cured products.
研究结果表明：利用升角与升弓高之间的关系，可简化受电弓运动微分方程的推导；
The results show that the equations have benefit to the deduction of the pantograph's mechanical differential equations.
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