A class for each style sheet instruction type that contains the logic for that instruction.
用于每个包含那个指令逻辑的样式表类型的类。
Record on preoperative instruction flow sheet.
在术前指导流程表上作好记录。
Instruction for the use of this calculator are on each sheet.
指令的使用这个计算器是每个表。
Instruction for the use of this calculator are on each sheet.
指令的使用这个计算器是每个表。
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