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- Three tree factors of diameter at breast height,tree height and tree volume of Japanese larch had been studied by using 5 empirical formulas and grey GM(1,1)model in this paper. 对日本落叶松三测树因子采用了5个经验方程和灰色GM(1,1)模型进行研究,经验方程中选中了柯列尔式,柯列尔式的各测树因子的残差平方和均小于GM(1,1)的残差平方和。
- The average tree volume,height and diameter of 6 superior families were above 0.033 339 m3,11.31 cm,6.62 m respectively which had average genetic gains above 30%,9%,11%. These superior families could be used for seed orchard and vegetative propagation. 调查数据经过统计分析;从参试的家系中选出6个优良家系;其材积、胸径、树高平均值分别达到0.;033 339m3、11
- The results showed that the increments of tree height,DBH and tree volume of Chinese fir pure forest were similar to mixed forest in the first 4 years,but those of pure forest rapid fell later on. 结果表明,纯林杉木生长落后于混交林杉木。与纯林相比,混交林杉木16年生时单株材积增加了70.;10%25;
- Study on measurement precision of standing tree volume 立木材积测算精度的研究
- As the car hit the tree he was snot out. 汽车扭在村上,他被猛地摔了出来。
- The bird sang high and clearly in the tree. 鸟儿在树上清脆地高歌。
- The volume of this container is 20 cubic meters. 这个集装箱的体积是20立方米。
- This volume is foxed on the flyleaf. 这卷书的空白页发黄了。
- The annular markings on a tree indicate its age. 树的环形纹理显示其年龄。
- The car hit the tree with a sickening crash. 那辆汽车撞在树上发出让人难受的撞击声。
- The store- room be400 cubic feet in volume. 这库房的容量是400立方英尺。
- An arrow whizzed past and stuck in a tree. 一支箭“飕”地一声飞过去,钉在一棵树上。
- The liquid was 5 litres in volume. 该液体的体积为5升。
- The squirrel ran up a tree and got out of my reach. 松鼠跑到树上去了,我逮不着。
- The workers saw off a limb from the tree. 工人从树上锯下了一根大树枝。
- He is not made for climbing the tree of knowledge. 他不是生来适于攀登知识之树的。
- The volume of trade with Japan has increased. 与日本的贸易额增加了。
- He tethered his horse to a tree. 他用绳子把马拴在树上。
- Don't play your radio at full volume. 不要把收音机开到最大的音量。
- The ivy twined round the oak tree. 长春藤盘绕着橡树。