tree n. 特里〔姓氏〕。 n. 1.树〔主要指乔木,也可指较大的灌木〕。 ★玫瑰可以称为 bush, 也可以称为 tree. 2.木料,木材;木构件;〔古语〕绞首台;〔the tree〕(钉死耶稣的)十字架;鞋楦。 3.树形(物),世系图,家系 (=family tree);【数学】树(形);【化学】树状晶体。 a banana tree 香蕉树。 an axle-tree 心棒,轴料。 a boot-tree 靴楦[型]。 a saddle-tree 鞍架。 at the top of the tree 在最高地位。 tree of Buddha 菩提树。 tree of heaven 臭椿。 tree of knowledge (of good and evil) 【圣经】知道善恶的树,智慧之树。 tree of life 生命之树,生命力的源泉【植物;植物学】金钟柏。 up a tree 〔口语〕进退两难,不知所措。 vt. 赶(猎兽等)上树躲避;〔口语〕使处于困境;穷追;把鞋型插入(鞋内)。
The variable parameter taper equation, which was suitable to pin us elliottii plantation form changing law, was built with the sample wood datas on the basis of the research of about form shape in the tree mensuration, one-dimensional volume table, two-dimensional volume table, one-dimensional timber-produced rate table for timber assortment, and two-dimensional timber-produced rate table for timber assortment were complied based on the above 摘要在树干形状研究的基础上,利用样木资料建立了一个适合湿地松人工林干形变化规律的可变参数削度方程,据以编制了一元材积表、二元材积表、一元材种出材率表和二元材种出材率表,这些数表经检验误差较小,精度较高,可在林业生产上推广应用。