Air temperature self-regulating valve for soil heating Devyatkina V.D.
- 专利权人:
- Девяткин Викторий Данилович (RU)
- 发明人:
- Девяткин Викторий Данилович (RU)
- 申请号：
- RU2019106396
- 公开号：
- RU2019106396A
- 申请日:
- 2019.03.06
- 申请国别(地区):
- RU
- 年份:
- 2020
- 代理人:
- 摘要：
- 来源网站：
- 中国工程科技知识中心
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