大家帮我看看压缩机的英语描述怎么翻译? rider bands, piston rings, and piston rod packing shall be selected by the manufacturer for non-lubricated hydrogen /hcl gas service. rider bands, piston rings, and piston rod 的包装应该选择无润滑[wiki]氢[/wiki]/hcl气体的[wiki]环境[/wiki]下. (是不是包装物不能含有此类物质.) .查看更多