求翻译：压气站所需止回阀选用无冲击、压降小、流通能力大、密封性能好的止回阀。安装在压缩机出口端的止回阀应能满足压缩机出口温度较高的要求，大口径止回阀应为焊接端口，并能适用于埋地安装。是什么意思？

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Compressed gas station the required non-return valve choose No shocks, pressure reduction small, circulation capacity, sealing performance good non-return valve. Install the compressor export port of non-return valve compressor outlet temperature should be able to meet the demands for a higher calib

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Compressor stations needed check valve selection of no impact, smaller pressure drop, large flow capacity, good sealing performance of check valves. Installed on the compressor outlet check valve should be able to meet the requirements for high compressor exit temperature, maintenance of large diame

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