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A technology transfer contract shall be in writing.
技术转让合同应当采用书面形式。
youdao
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No addition or modification to this contract shall be valid unless made in writing.
除非以书面形式做成，对本合同所进行的补充和修改均无效。
youdao
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No addition or modification to this contract shall be valid unless made in writing.
除非以书面形式做成，对本合同所进行的补充和修改均无效。
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