查询词典 lumbers

As one of the most important lumber grading systems in North America, machine grading does non-destructive test by stress rated machines, and then classify the lumbers into different grades according to their bending strength and the modulus of elasticity.

规格材的机械分等方法是北美一种很重要的分等体系，即采用机械应力测定设备对木材进行非破坏性试验，按测定的木材弯曲强度和弹性模量确定木材的材质等级。

First, the anatomical features, physical features and extraction contents of small-diameter lumbers were studied systematically and compared with mature wood. The reason that drying defects occurred easily in small-diameter lumber was discussed based on its properties.

首先，测定了小径木的解剖学特性、物理特性和抽提物的含量，并与成熟材进行了比较，根据小径木木材的上述性质探讨了小径木锯材产生干燥缺陷的原因。

The objective of this paper was to investigate the possibility of a transverse vibration technique for assessing static bending, tensile and compressive strength of structural lumbers.

共选择了186根尺寸为38 mm 89 mm 3 658 mm的加拿大针叶树商品材云杉-松-冷杉的建筑结构材作为试验材料，探讨采用一种横向振动技术来评估这些规格材的静态抗弯、抗拉和抗压强度的可行性。

Third, drying defects and mechanical performance were determined, and the microstructure of the small-diameter lumber was observed with scan electron microscope. The drying quality of lumbers was assessed too.

第三，本试验对不同干燥方式下小径木锯材的可见干燥缺陷和力学性能进行了测定，同时，采用扫描电镜对干燥后小径木锯材的微观结构变化进行了观察，并对锯材的干燥质量进行了评定。

The dependence between the flexural strength and the size of Chinese fir dimension lumber was investigated.206 dimension lumbers were sorted into three test groups in terms of dynamical modulus of elasticity.

选取206根人工林杉木规格材，按照动态弹性模量配成3个测试组，研究了规格材测试跨度与其抗弯强度之间的依存性，并利用斜率法和形状参数法求得抗弯强度5%分位值和50%分位值的长度尺寸效应。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。