查询词典 deciduous

Medium-large thick-trunked deciduous tree of the eastern United States and southern Canada having close-grained wood and deeply 7-lobed leaves turning scarlet in autumn.

美国东部和加拿大南部的粗干落叶乔木，树材中等，木材纹理紧密，叶片七深裂，秋天变为大红色。

Small shrubby deciduous yellowwood tree of south central United States having spines, glossy dark green leaves and inedible orangelike fruit; its hard orange-colored wood used for bows by native Americans; frequently planted as boundary hedge .

美国中南部灌木状黄木，叶黑绿色，有光泽，带刺，果实似橙，不可食；坚硬的橙色木材被美国土著居民用于做弓；作为分界篱笆。

Inflorescences terminal racemes; bracts small, deciduous; bractlets 1 or 2. Flowers bisexual, zygomorphic.

花序顶生总状花序；苞片小，脱落；雹片1-2；花两性，左右对称。

Racemes terminal or axillary. Flowers zygomorphous. Sepals 5, deciduous after anthesis. Petals 3, pink to purple, ca. 8 mm long, the lateral 2 elliptic, ca. 3/4 connate with the keel, which with cristate appendages at apex. Stamens 8. Ovary obovoid, with narrow wings.

总状花序顶生或腋生；花两侧对称；萼片5，花后脱落；花瓣3，粉红色至紫红色，长约8毫米，侧生2枚长椭圆形，约3/4与龙骨瓣合生；龙骨瓣顶端有鸡冠状附属物；雄蕊8枚；子房倒卵形，有窄翅。

Any of various evergreen trees of the genus Abies, having single, flattened needles and erect cones with deciduous scales.

冷杉，枞树冷杉属中的任意一种常青树木，有单叶的扁形针叶和直立的每年都剥落鳞片的球果

Any of various deciduous shrubs or trees of the genus Alnus, native chiefly to northern temperate regions and having alternate, simple, toothed leaves and tiny fruits in woody, conelike catkins.

桤木一种桤木属的落叶灌木或乔木，原主要生长于北温带地区，有互生的锯齿形单叶，在其木本的锥体柔荑花序中有微小的果实

Alnus formosana that belongs to Alnus of Betulaceae is a tall deciduous arbor, and its native area locates in Taiwan province.

台湾桤木为桦木科桤木属落叶大乔木，原产台湾。

Alnus formosana that belongs to Alnus of Betulaceae is a tall deciduous arbor, and its native area locates in Tai...

台湾桤木为桦木科桤木属落叶大乔木，原产台湾。

Petals alternisepalous,(2-)4, absent in female flowers of some Myriophyllum , imbricate, longer than sepals, often deciduous with stamens.

花瓣与萼片互生，(2-)4，但是Myriophyllum的一些种类雌花无花瓣，花瓣覆瓦状排列，比萼片长，通常与雄蕊一起脱落。

Amelanchier alnifolia Nutt is a kind of deciduous shrub or small tree of Saskatoon in Rosaceae, and one of the famous nonwood tree species in North America.

桤叶唐棣属于蔷薇科唐棣属落叶灌木或小乔木，为北美洲的著名经济树种。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。