common walnut

基本解释

Basic density of Common Jujube and fiber length of English Walnut could be predicted, and the results were significant.
人工经济林枣木基本密度、核桃木材纤维长度可以通过生长轮年龄来预测，且预测效果显著。
On the other hand, the walnut oil is relatively unstable compared to other common plant oils, which can be ascribed to its high content of PUFA.
由于核桃油脂中的不饱和脂肪酸含量高，与其它油脂相比，核桃油脂极不稳定。
The density and strength of English Walnut, Gingko, Camphor Tree Camphor Wood and Rubber Tree were medium, and the density and strength of Common Jujube and Chinese Chestnut were high.
核桃、橡胶、樟树和银杏的密度和力学强度较大，板栗和枣树木材的密度和力学强度很大；

It's most common in hard maple, but also occurs in birch, ash and, in rare cases, black walnut.
NPR: Excerpt: 'A Splintered History Of Wood'