It introduced the seven - layer coextrusion blown - film line for high barrier film.介绍了七层共挤高阻隔薄膜吹塑机组.Multilayer co - extrusion feedblock, allowing for coextrusion of up to 7 kinds of raw materials.多层共挤复合分配器, 最多达七种成份原料共挤复...
He collected an old engraving of London Bridge.他收藏了一张古老的伦敦桥版画。Some writing has the precision of a steel engraving.有的字体严谨如同钢刻.The engraving was rolling up in a sheet of tissue paper.版画裹在一张薄纸里....
Melted metal is poured into a mold to harden into shape.熔化之金属倒入模子中以冷却成形.Give the cardboard two or three coats of varnish to harden it.在纸板上涂两三层清漆使其变硬。The varnish takes a few hours to harden.清漆需要几个小时才能干透。Whilst Marc did gr...
British scientists have brought computer science to bear on this problem.英国的科学家们已经应用计算机科学来解决这个问题。I'm minoring in computer science.我辅修计算机科学。a degree in computer science计算机科学学位...