Ternary optical coder , decoder and ternary logical calculus belong to key components of ternary optical computer, and they are the base of implementing other components of the optical computer.
三值光编码、解码器和三值逻辑运算器是三值光计算机关键部件，是实现三值光计算机其它部件的基础。
The paper lists four groups of homonymy syndromes. It points out that the knowledge of medicine for a coder is the key to code the diseases correctly.
本文列举了四组具有相同名称、但却是完全不同的疾病的综合征，并给予适当的编码。提出了编码人员的医学理论知识的掌握与编码的准确性密切相关。
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