An explanation, in line with the structural changes of both eastern and western work of the same kind, is attempted in this paper.
本文不揣鄙陋，根据东西方同类工作的内部结构与历史变迁，尝试为此提供一种说明。
At the same time another kind of paper was developed, made form silk.
在这一时期，研制了另一种纸，它是用丝帛制成的。
This paPer introduces the equipments of double-frequency induction heating the forged steel cold work roller, and compare with the same kind induction heating equipments.
介绍锻钢冷轧工作辊双频感应淬火设备特点，国内首创较低的中频频率的选定，与同类淬火设备比较的优点。
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