英:[ˌɪnvə'lu:krəm]
美:[ˌɪnvə'ljukrəm]
英:[ˌɪnvə'lu:krəm]
美:[ˌɪnvə'ljukrəm]
复数:involucra
(复 involucra)总苞
〔死骨的〕包壳
borrowed from New Latin involūcrum, going back to Latin, "wrapper, cover, envelope," from involū-, variant stem of involvere "to move by rolling, roll back on itself, enclose in a covering, wrap up" + -crum, variant of -culum, instrumental suffix (going back to Indo-European *-tlom) before a preceding l — more at involve
The first known use of involucrum was in 1657
involucrumnoun
a formation of new bone about a sequestrum (as in osteomyelitis)
1 Light intensity influenced significantly involucrum, which distributed in the canopy with the relative light intensity hither than 13 % of 8-year-old boos trees 10% of 15-year-old trees.
叶幕内的光能分布对总艺的分布也有重大影响,8年生植株总苞主要分布于相对光强13%以上的叶幕层,而15年生植株总艺主要集中于相对光强10%以上的叶幕层。
2 Its jaws and teeth were similar to those of early whales, but the best evidence was the presence of a thickened knob of bone in its middle ear, called an involucrum.