轻信
发表于 2025-3-23 12:04:34
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让步
发表于 2025-3-23 15:18:31
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单纯
发表于 2025-3-23 21:27:10
bestimmten Zähnezahlen zur Verfügung stehen. Wie aus den nachstehend angeführten Beispielen zu ersehen ist, ergeben sich beim Näherungswertrechnen vielfach größere Primzahlenl, besonders darin, wenn hohe Genauigkeit erreicht werden soll. Um nun den Rechnungsgang abzukürzen, empfiehlt es sich, für M
轻弹
发表于 2025-3-23 22:50:35
Book 1979for studying root physiology are not covered in this book. Scientific publications on roots are scattered in many different journals published all over the world. By working through the international root literature I found that about ten thousand papers on root ecology have been published at the pr
类似思想
发表于 2025-3-24 02:45:39
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炼油厂
发表于 2025-3-24 06:42:37
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Indebted
发表于 2025-3-24 13:17:29
General Survey of Root-Study Methods,tivated crops and determined their morphology, as well as their weight and length. Du Hamel Du Monceau (1764/65) excavated tree root systems. Then for over one hundred years no important root research was documented.
倒转
发表于 2025-3-24 17:37:04
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细菌等
发表于 2025-3-24 20:34:22
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可以任性
发表于 2025-3-25 02:37:30
Auger Methods,d augers or by mechanical sampling machines, and separating the roots from the soil by washing. Except for special purposes no attempt is made to keep the roots in their natural positions. The size of the samples generally is smaller than those from the monolith methods.