照相排版机 meaning in Chinese

linofilm
photographic typesetter
phototypesetter

According to the high precision and rotation stability requirement of negative scan unit of cylinder photography typesetting machine , the three levels of cylindrical gears transmission separately , the two - stage cylindrical gears - worm drive , and the worm drive was chosen through calculating its velocity ratio , the checking transmission precision , carrying on the movement precision analysis to the sweep unit , and computing overall transmission error
摘要针对圆筒型照相排版机底片扫描装置要求传动精度高，转动平稳的特点，分别选择三级圆柱齿轮传动，双级圆柱齿轮蜗杆传动，蜗杆传动3种常见的传动方式，计算其传动比，验算传动精度，对扫描装置进行运动精度分析，计算总体传动误差。