angular derivative是什么意思

网络释义

用法例句

Variations of the microfibril angle in developmental moso bamboo culms

毛竹材质生成过程中微纤丝角的变化

Variation of microfibril angles within the tree of Populus(tomentosa.)

毛白杨微纤丝角在株内的变异

The microfibril angles of six Chinese Firs were measured by using the X-ray diffraction and software programmed by the authers.

本文利用X射线衍射法和自编的软件对杉木的微纤丝角进行了测定,结果表明:微纤丝角受很强的遗传控制,在不同株间、幼龄材间及成熟材间的差异极不显著;微纤丝角受树木生长年龄的影响很大,近髓心处最高,自髓心向外迅速减小,9 a以后减小趋势缓慢,到大约15a时出现最小值,最大值与最小值相差达20多度,回归分析得到的二项式方程R2达到0。

A simple method for measuring the small angle by used the instrument -spectrometer in experiment is introduced.

介绍了利用实验室中常规仪器分光计测量微小角度的方法,用其自准直望远镜测量小工件的微小角度,并对给方法的可行性进行了简单分析,证明用分光计测量微小角度的方法是可行的,而且方便、简捷。

Incidence of intraoperative complications related to two microkeratome in laser in situ keratomileusis;

LASIK术中两种微角膜刀相关的并发症分析

Variations of the microfibril angle in developmental moso bamboo culms

毛竹材质生成过程中微纤丝角的变化

Comparison of Four Kinds of Measurement Techniques for Wood Microfibril Angle

木材微纤丝角四种测试方法对比研究

Genetic Analysis of Fiber Traits and Microfibrillar Angles on Clones of Populus tomentosa

毛白杨无性系纤维特性及微纤丝角的遗传分析

Study on Wood Microfibril Angle and Its Relation with Wood Mechanical Properties;

杉木木材微纤丝角及其与力学性质关系研究

The Variation Pattern of Microfibril Angle, and Its Relationships with Wood Properties for Poplar Clones;

杨树无性系微纤丝角的变异及其与材性的关系

Relationship of wood MFA and density with elastic modulus

木材微纤丝角和密度与弹性模量的关系

Study on Estimation of E. Pellita s Microfibril Angle and Air-Dry Density by Near Infrared Spectroscopy Technology;

利用近红外光谱技术预测粗皮桉木材微纤丝角和气干密度的研究

Tracheid morphology characteristics and microfibrillar angle and their variation patterns of Larix gmelinii

兴安落叶松管胞形态特征和微纤丝角及其径向变异的研究

Quantitative Prediction of Holocellulose,Lignin,and Microfibril Angle of Chinese Fir by BP-ANN and NIR Spectrometry

BP神经网络与近红外光谱定量预测杉木中的综纤维素、木质素、微纤丝角

SAXS Analysis of Microporosity of Pre-Oxidized Fibers

X射线小角散射研究碳纤维原丝预氧化过程中的微孔结构

cellulose fibril

纤维素原纤维,纤维素微丝

A faint smile flickered across her lips.

她嘴角上掠过一丝微笑。

A smile touched the corners of his lips.

他嘴角泛出了一丝微笑。

a flicker of a smile showed at the comers of her mouth.

她的嘴角露出一丝微笑。

The ghost of a smile played round her lips.

她嘴角上露着一丝微笑.

A flicker of a smile showed at the corners of her mouth

她的嘴角露出一丝微笑

A suspicion of a smile crossed her lips.

一丝微笑浮上她的嘴角。

Test method for number of filaments in carbon fiber strands by microscopy

GB/T3363-1982碳纤维复丝纤维根数检验方法(显微镜法)