求翻译：合理的液压支架选型是实现矿井安全高产高效的关键因素之一，而工作面液压支架额定工作阻力的合理确定是液压支架选型的关键。支架工作阻力确定的目标是使工作面围岩控制在达到最优的技术经济效果的前提下，保证支架工作的高可靠性及适应性。本研究根据胜利煤矿具体地质条件，确定合理的支架工作阻力以实现矿井安全高效开采的目的。是什么意思？

Reasonable hydraulic support selection is one of the key factors of high yield and efficiency, Mine Safety and reasonably determine Hydraulic Props rated resistance is the key to the selection of hydraulic support. The goal is to support working resistance determined face surrounding rock to reach t

Reasonable Hydraulic support options is to achieve high-yield, and efficient security mine one of the key factors in the surface resistance hydraulic support rated work reasonably determine the hydraulic support option is critical. Stand the objectives set the Resistance work surface of the rock is

The reasonable hydraulic pressure su

Reasonable selection of hydraulic support is one of the key factors to achieve mine safety high yield and high efficiency, and reasonable determination of the rated working resistance of hydraulic support in fully mechanized face is key to the selection of hydraulic support. Working resistance of su