印材有铜印、骨印、牙印、陶印以及泥封（图六）等。
They were made of bronze, bone, tooth and "Mud Cover" (picture 6), etc.
单色套印，在中国首创唯一一家用影写凹版印刷，用过铅印、铜印、凸版印刷，手动续纸。
The first publication adopting photogravure single-color printing method. Letterpress printing, copper stamp, relief printing and manual feed were used.
单色套印，在中国首创唯一一家用影写凹版印刷，用过铅印、铜印、凸版印刷，手动续纸。
The first publication adopting photogravure single-color printing method. Letterpress printing, copper stamp, relief printing and manual feed were used.
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