spruce [spru:s]

spruce的基本解释

adj.

颇为干净的, 俏的, 整洁的, 时髦的

vt.

(使)显干净, 打扮整齐

vi.

(使)显干净, 打扮整齐

n.

云杉

spruce的同义词

v. smarten up · spruce up · slick up

spruce所属的单词分类

Tree / 树 [134]

wingnut  ·  white ash  ·  tulip-tree  ·  sweetgum  ·  quaking aspen  ·  Lone Pine  ·  honeylocust  ·  choke cherry  ·  black willow  ·  sitka spruce

与spruce相关的网络例句 [注：此内容来源于网络，仅供参考]

The stem flow of spruce and larch had acidulation on the soil, but the soil around the bole of spruce didn't present intensive acidity (the lowest pH of water and KCl immersion were 5.13 and 4.79, respectively), so the acidulation of stem flow is not the direct reason of spruce death.

虽然两树种树干径流对土壤均产生了酸化作用，但由于云杉树干周围土壤PH并没有出现较强的酸性（水浸pH下降到5.13，盐浸pH下降到4.79），因此，还不能认为云杉的衰退死亡与树干径流的酸化作用有直接关系。

Breeding technology is the base of seedling cultivating, seedling of Korean Spruce in certain shade could grow better than seedling of Korean Spruce in sunlight, seedling of Korean Spruce could grow bester in 25% soil containing water. Forest management was formed by standardized site selection, site preparation, planting, cultural work on young trees of seedlings cultivating technology.

育苗技术是苗木培育的基础，红皮云杉育苗在一定的遮光条件下生长好于全光条件下的生长土壤含水率25％最适苗木生长；营造技术将整套苗木培育技术从立地选择、整地栽植、幼林抚育系统规范化后面形成的；密度定量管理以密度效应为理论基础。

According to the change of the enemy\'s quantity and the qualitative theory of the differential equation, we research the spruce aphides and its predator system. At the same time, we discussion the spruce aphid multiplication model when the natural enemy quantity is a certain value and the periodic oscillating model whose the quantity of the natural enemy changes along with the time. Obtains the stability condition of the balance point and the limit-cycle existing condition, the system presents the dissipative structure\'s character. Finally it explains that this theoretical analysis has certain practical significance regarding the preventing and controlling harmful insect.

第五章，松毛虫与其天敌的关系是食饵和捕食者的关系，根据天敌数量的变化，利用微分方程定性理论，研究松毛虫与天敌系统，讨论天敌数量为一定时的松毛虫增殖模型和天敌数量随时间变化的周期振荡模型，得到正平衡点全局稳定性和极限环的存在条件，通过计算机模拟，说明周期振荡的捕食模型能够呈现典型的时间耗散结构特征，对于防治害虫有一定的实际意义。

与spruce相关的网络解释 [注：此内容来源于网络，仅供参考]

spruce：云杉

本公司主要代理卑斯省原住民开设木材工厂之优质原木,锯木,木方及木皮.适合各种出口,本销家具,大小木制工艺制品,防腐木,户外或户内建筑用途.西洋杉/雪松/香柏(Western Red Cedar), 黃松(Yellow Cedar), 鐡杉(Hemlock), 云杉(Spruce), 花旗松/黃杉(Douglas Fir),

spruce：杉木

提琴背板(back)是由两块枫木(maple)所制成,双拼面板(two-piece belly)则由两块不相称且不同年份的云杉木(spruce)拼板而成. 背板的木头质量极佳,有色彩鲜明而呈波状的虎纹(flame),侧板(rib) 木头的斜线虎纹也相当均匀,与背板极为相称.

spruce：云杉木

提琴背板(back)是由两块枫木(maple)所制成,双拼面板(two-piece belly)则由两块不相称且不同年份的云杉木(spruce)拼板而成. 背板的木头质量极佳,有色彩鲜明而呈波状的虎纹(flame),侧板(rib) 木头的斜线虎纹也相当均匀,与背板极为相称.

spruce：针枞

根据这个原则,很多种常绿树植物,像松树、针枞(spruce)、道格拉斯枞(Douglasfir)、落叶松(larch)等,除了来自美国的,都不准带进加拿大来水果方面,除非来自美国,不然一样寻常都不克不及携带入境这包括了苹果、杏(apricot)等常见的水果,

European spruce：欧洲云杉

按>分类,云杉类树种(Sprce)为松科(pinaceae)云杉属(picea),产于地球北半球共约40种,中国最好音板用树种是丽江云杉(P.Likiangensis),世界著名的乐器用云杉树种有:欧洲云杉(European Spruce)丽江云杉(Likiang S.)西加云杉(Sitk