Difficulties in manufacturing heavy gauge pipeline steel with high toughness lie in the process of hot tandem rolling.
指出厚规格高韧性管线钢的生产难点在于热连轧。
In October the purchasing managers' index, a closely watched gauge of activity in manufacturing and service industries, dived from 46.9 to 43.6, a nadir for the ten-year-old survey.
一个密切关注制造和服务业的计量指标—采购经理人指数在十月从46.9下降至43.6，这是其创立十年来的最低点。
Difficulties in manufacturing heavy gauge pipeline steel with high toughness lie in the process of hot ta...
指出厚规格高韧性管线钢的生产难点在于热连轧。
Methods, techniques and key points should be paid attention to during gauge design, manufacturing and test were introduced.
介绍了汽车大型饰件检具设计、制造、检测中应注意的要点，以及所采用的一般方法和技巧。
Methods, techniques and key points should be paid attention to during gauge design, manufacturing and test were introduced.
介绍了汽车大型饰件检具设计、制造、检测中应注意的要点，以及所采用的一般方法和技巧。
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