leaf spine是什么意思

网络释义

用法例句

Variations of concentrations of elements in needles of Pinus massoniana(L.) along an urban-suburban gradient in Guangzhou;

广州城郊环境梯度下马尾松针叶元素质量分数变化特征

Studies on diterpenes in needles of Pinus sylvestris;

樟子松针叶中二萜类成分研究

Change of ABA content inside the damaged Pinus massoniana needles.;

受害马尾松针叶内脱落酸含量的变化

Nutrient contents and resorption characteristics in needles of different age Pinus massoniana (Lamb.) before and after withering;

不同林龄马尾松针叶凋落前后养分含量及回收特征

With the appearance observation and the determination of the contents of Cr,Zn,Pb,Mn,Fe,Cu and S in different ages of needles of Pinus.

ExEndl)不同年龄针叶中Cr,Zn,Pb,Mn,Fe,Cu等重金属元素及元素S质量分数的分析,探讨了它们与北京大气污染之间的关系。

Objective: To study the non-taxoids in the leaves of Taxus mairei.

目的:研究美丽红豆杉针叶中的化学成分。

Mixed cooking and the selection of continuous cooking systems for softwood and hardwood

针叶木、阔叶木混合蒸煮以及连续蒸煮系统的选型

The influence of PFI beating on fibre and handsheet properties of hardwood and softwood kraft pulps was investigated.

研究了针叶木和阔叶木硫酸盐浆PFI打浆对各自纤维性质及浆张性能的影响。

The dissolved and colloidal substances(DCS)from softwood bleached chemi-thermomechanical pulp(BCTMP) were studied on the physical-chemical properties of DCS water.

以针叶木漂白化学热磨机械浆(BCTMP)为原料,模拟制成造纸白水,对其在生产过程中产生的溶解与胶体物质(DCS)的物理化学性能进行研究。

any of numerous conifers of the genus Larix all having deciduous needlelike leaves.

每年落叶针叶属植物。

a disease of conifers causing the needles to fall.

针叶树的一种疾病导致针叶脱落。

Needlelike, as the leaves of pine;acerate.

似针的，针状的似针的，如同松树的叶子；针状的

Having broad or relatively broad leaves rather than needlelike or scalelike leaves.

（有）阔叶的有宽或相当宽的叶，而非针叶或鳞叶的

Coniferous sawn timber

GB/T153-1995针叶树锯材

dowelling in the length, of coniferous wood

针叶树木板,经纵钻孔的

flounce not knitted or crocheted

荷叶边,非针织或钩编

an area planted with pine trees or related conifers.

种植松树或针叶林的林

One example is the needle blight.

针叶萎凋病就是一例。

Austroriparian life zone

【生态】南方针叶林带

soft-wood charcoa

软材木炭,针叶材木炭

frieze for parquet flooring, of coniferous wood

针叶树缘板,镶木地板用

Any of various other coniferous trees, such as the Norfolk Island pine.

（其它）针叶状树其它针叶状树，如尼福克岛松

"The long, pointed leaves are glossy green and lance-shaped."

叶亮绿色,披针形,叶尖细长。

A narrow stiff leaf, as those of conifers.

针叶狭长的硬叶，如松柏科植物

Australasian evergreen conifer having a graceful head of celery-like foliage composed of phyllodes borne in the axils of scalelike leaves.

澳大拉西亚常绿针叶树，树冠优美，叶似芹菜叶，鳞状叶腋长有叶状柄。

the wood of broad-leaved dicotyledonous trees (as distinguished from the wood of conifers).

阔叶双子叶树木的木料（区别于针叶树木材）。

"Juvenile leaves are needlelike; mature leaves are awl-shaped, spreading, and arranged in pairs or in whorls of three. "

幼叶呈针状,成熟叶呈锥状,成对或3叶轮生。