机械工程专业英语词汇翻译 ... 虚线笔 dotting pen 打点冲 dotting punch 双径节制（齿轮） double [diametral] pitch system ...
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The diagonal double pitch curved lattice grid system is used in the country for the first time.
斜拉双坡曲面钢网壳结构体系，为国内首次采用。
Xinjiang to build unique ear training system for teaching and training "Musical Ear", the final pitch to the students truly do have the "double sense of music" or even "multiple music sense.
已达到构建新疆特色的视唱练耳教学体系，培养“多元音乐耳朵”，最终让学生在音感上真正做到具备“双重乐感”甚至“多重乐感”。
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