在留学生学习过程中，使用的是中国发明专利“中国商环”。
Learning process in students, the use of patents in China, "China Business Central."
“中国商环”的名字是由世界卫生组织(WHO)以其发明者商建忠的姓氏命名的。
"Quotient ring in China," the name is from the World Health Organization (WHO) for its inventors are named after the surname of Jianzhong.
“中国商环”的名字是由世界卫生组织(WHO)为纪念其发明者商建忠采用的命名。
"China quotient ring" is the name of the World Health Organization (WHO) to commemorate the adoption of its inventors are naming Jianzhong.
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