The model selection of population prediction and scientific confirmation of prediction parameters are two most important basic steps.
人口预测模型的选择和预测参数的科学认定，是人口预测实践中最重要的两个基本环节。
Set parameters confirm pedal up sewing, neutral and parking space, convenient operation, Show failure code facilitate fault confirmation excluded.
设定参数确认踏板起缝、中立与停车位置，操作简便；显示故障代码便于故障的确认排除。
EBW procedure of pyramidal horn antenna was researched, including joint design, welding parameters confirmation, etc. And the comparisons with TIG procedure were also made.
研究了角锥喇叭天线的电子束焊接工艺，并与传统的氩弧焊成形工艺进行了对比。
EBW procedure of pyramidal horn antenna was researched, including joint design, welding parameters confirmation, etc. And the comparisons with TIG procedure were also made.
研究了角锥喇叭天线的电子束焊接工艺，并与传统的氩弧焊成形工艺进行了对比。
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