heartwood的翻译，读音

近义词

n. duramenbasis metal

例句

The sapwood is yellowish with a hard and heavy heartwood. 边材微黄色，心材坚硬而且沉重。

The sapwood is yellowish with a hard and heavy heartwood . 边材微黄色，心材坚硬而且沉重。

What can be said about the range of dates of the last heartwood rings? 怎样描述最后的心材环的日期范围。

One or more layers of living and functional sapwood cells are periodically converted to heartwood. 每个生长周期都有一或多层活的边材细胞转变成心材. 。

Extract of the heartwood of acacia catechu used for dying and tanning and preserving fishnets and sails; formerly used medicinally. 用儿茶树的心材提取，用于印染、制革、渔网和帆蓬保养，以前用于医药。