process for recovery of entwässerungsrohren in soil and by this method, entwässerungsrohr refurbished

• 1. 可用于ent-kaurane家族天然产物合成的不对称DA反应的方法及其产物 [P] . 中国专利： CN108530478B . 2021.03.05
• 2. 五种来源于火殃勒的ent-atisane型二萜类化合物及其制备方法和用途 [P] . 中国专利： CN111454153A . 2020-07-28
• 3. process for the production of / entwässerungsrohren plastic [P] . AT230806B . 1963-12-30

  机译： /entwässerungsrohren塑料的生产工艺

• 4. perforated entwässerungsrohr [P] . AT312514B . 1974-01-10

  机译： 多孔排水管

• 5. device for digging of trenches and laying of working or entwässerungsrohren [P] . 德国专利： DE2550735C2 . 1985-05-15

  机译： 挖沟和工作或安装设备的设备

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• 8. Forschung über die katalytische Entwässerung des Isoamylalkohols. III. Prüfung über die Bestandteile der durch Zinksulfat-Katalysator-Entwässerung entstehenden Produkten [O] . Akira Mitsutomi 1961

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