Douglas fir

Douglas fir的基本解释

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花旗松, 绿枞

Douglas fir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Douglas fir相关的网络例句 [注：此内容来源于网络，仅供参考]

In the fire performance study, the charring rate of side and bottom were ranged from 0.587 to 0.750 mm/min and 0.709 to 0.897 mm/min for China fir glulam, 0.643 to 0.770 mm/min and 0.644 to 0.911 mm/min for Japanese cedar glulam, 0.608 to 0.757 mm/min and 0.614 to 0.817 mm/min for Taiwania glualm, 0.588 to 0.627 mm/min and 0.632 to 0.694 mm/min for Douglas-fir glulam, and 0.530 to 0.568 mm/min and 0.566 to 0.583 mm/min for Southern pine glualm, respectively. The results indicated that the charring rate in all glulam showed a decreasing order in Taiwania＞Japanese cedar ＞China fir ＞Douglas-fir＞Southern pine glulam.

集成材之火灾特性上，炭化速度方面：杉木集成梁侧面之炭化速度为0.587 - 0.750 mm/min；底面之炭化速度为0.709 - 0.897 mm/min；柳杉集成梁侧面之炭化速度为0.643 - 0.770 mm/min；底面之炭化速度为0.644 - 0.911 mm/min；台湾杉集成梁侧面之炭化度为0.608 - 0.757 mm/min；底面之炭化速度为0.614 – 0.817 mm/min；花旗松集成梁侧面之炭化速度为0.588 - 0.627 mm/min；底面之炭化速度为0.632 - 0.694 mm/min；南方松集成梁侧面之炭化速度为0.530 - 0.568 mm/min；底面之炭化速度为0.566 - 0.583 mm/min，有南方松集成材优於花旗松集成材，依序为杉木集成材、柳杉集成材、台湾杉集成材之趋势。

Hence, the modulus of rigidity, G, of glulam was measured by vibration test method in order to realize the shear deflection effect. The E/G values of Japanese cedar, Taiwania, Douglas-fir, and southern pine glulam were ranged form 13.2 to 14.5, 14.6 to 16.6, 12.1 to 16.6 and 16.0 to 19.1, respectively. The pure MOE was also obtained. The Ep and MOR values of glulam were ranged from 10.6 to 13.4 GPa and 48.3 to 61.9 MPa for Japanese cedar, ranged from 12.1 to 15.0 GPa and 41.8 to 58.8 MPa for Taiwania, ranged from 10.5 to 16.4 GPa and 37.2 to 65.6 MPa for Douglas-fir, ranged from 14.5 to 20.6 GPa and 70.2 to 78.48 MPa for Southern pine, respectively.

而消除剪力挠曲影响，即可得集成材之抗弯弹性模数真实值与抗弯强度，依本研究配置所得之柳杉集成材之Ep值与MOR值分别为10.6-13.4 GPa与48.3-61.9 MPa；台湾杉集成材之Ep值与MOR值分别为12.1-15.0 GPa与41.8-58.8 MPa；花旗松集成材之Ep值与MOR值分别为10.5-16.4 GPa与37.2-65.6 MPa；南方松集成材之Ep值与MOR值分别为14.5-20.6 GPa与70.2-78.4 MPa。

Bieti lost its habitat continuously in recently decades associated with the extension of rangelands and farmlands, as well as firewood collection etc. The monkey live mainly in primary fir forest and the mixed conifer forest, to evaluate the status of the monkeys' habitat, we employed GIS and RS software to identify the habitat types with five Landsat TM/ETM+ satellite imagery in winter of 1986, 1992, 1997, 2001 and 2006 years respectively. The work resulted in: 1 the size of summer grazing lands, farmlands, and fir forest was 13 100 hm2, 6 400 hm2, and 30 500 hm2 in 2006 respectively; 2 during the past 20 years (1986-2006), the size of fir forest (including primary fir forest and the mixed conifer forest) decreased by 14.6%(5 200 hm2), summer grazing lands and farmlands increased by 47.2%(4 200 hm2) and 14.3％(800 hm2) respectively; and 3, during the past 20 years, the number of firry forest patches increased by 68.4%, the mean size of firry forest patches decreased by 49.3%(from 15.1 to7.6 hm2), the largest patch index of firry forest decreased 54.9%; the patch richness had no change, but the Shannon's diversity index and the Shannon's evenness index increased by 2.7% respectively.

为了评估该物种的栖息地现状和变化情况，我们通过野外调查工作，应用GIS和RS技术，分别解译了1986年、1992年、1997年、2001年和2006年的Landsat TM/ETM+冬季卫星影像，并对解译结果进行了计算和分析，得到了以下西藏种群栖息地的主要结果：1）现有暗针叶林（包括原始针叶林和针阔混交林）面积是30 500 hm2，夏季牧场面积是13 100 hm2，农田面积是6 400 hm2；2）在过去20年间（1986-2006年），暗针叶林面积减少了14.6％（5 200 hm2），夏季牧场面积增加了47.2％（4 200 hm2），农田面积增加了14.3％（800 hm2）；3）在过去20年间，暗针叶林的斑块数量增加了68.4％，平均斑块面积下降了49.3％（从1986年的15.1 hm2下降到2006年的7.6 hm2），最大的斑块指数下降了54.9％；景观丰富度并没有变化，但Shannon多样性指数和Shannon均匀度指数分别增加了2.7％。

与Douglas fir相关的网络解释 [注：此内容来源于网络，仅供参考]

Douglas fir tree：是一种"松树",而和 "枞树" 无关

forget-me-not是"勿忘我",是一种花而不是其它. | Douglas fir tree是一种"松树",而和 "枞树" 无关. | Peanut是"花生",而不是"豆类".

Douglas fir tree：是一种"松树",而不是 "枞树

Silk worm是"蚕",而不是"蠕虫". | Douglas fir tree是一种"松树",而不是 "枞树". | Peanut是"花生",而不是"豆类".

Douglas fir tree：而和 "枞树" 无关,是一种"松树

forget-me-not是一种花而不是其它,是"勿无私". | Douglas fir tree而和 "枞树" 无关,是一种"松树". | Peanut是"花生",而不是"豆类".

Douglas fir tree：是一种"松树",而和

forget-me-not是"勿忘我".是一种花而不是其它. 9. | douglas fir tree是一种"松树",而和" | peanut是"花生",而不是"豆类". 11.

Douglas fir：花旗松

主要树种: 西部红柏,亦名红雪松 (Red Cedar) 花旗松 (Douglas Fir) 阿拉斯加黄杉,亦名黄桧或黄雪松 (Yellow Cedar) 铁杉 (Hemlock) 我们可以提供以上各种树种的 原木 多种尺寸和等级的特制板材,包括装饰用的无节材和建筑用的规格材及定制板材.