... Downtime 停机时间，印刷机停机、维修、清洗或换版等不生产时间 Drag roller 拉纸辊 Draige value 特雷氏值，化学物质对人眼的损害评估值，分1至4四档，数字越大危害越严重，2以下只要遵守指示处理，对健康或安全无甚影响 ...
双语例句
1
Through drilling experiment in 156 adjustment Wells, the drilling behaviors, cutter wear, downhole jet flow field and drilling effect of drag bits and roller ones were comparatively analyzed.