secondary ray

A method to determine the mean spiral angle ( commonly called microfibril angle) of cotton fibre secondary walls from the spread of the ( 002) crystal plane arcs in X-ray diffraction diagram is proposed.

本文阐述应用X射线（002）面衍射弧测定棉纤维次生胞壁平均螺旋角（又称微纤丝角）的方法。

The Mean Spiral Angle Measurement of Cotton Fibre Secondary Walls by X-Ray Diffraction

用X射线衍射法测定棉纤维次生胞壁的平均螺旋角

A time-of-flight secondary ion mass spectrometer ( TOF-SIMS), X-ray photoelectron spectroscopy ( XPS), an atomic force microscopy ( AFM), and contact angle measurements were used to characterize the monolayer.

使用时间飞行二次离子质谱仪（TOF-SIMS）、X射线光电子能谱仪（XPS）、原子力显微镜（AFM）和接触角测量仪对FTE自组装膜进行了表征。

There pellet matter distributed in the secondary cortex of old roots, and in the ray parenchyma.

老根的次生皮层和射线薄壁细胞都分布有较多的颗粒物质。

With the progressive development of stem, the activity of vascular cambium began. The fascicular cambium differentiated into secondary xylem and secondary phloem, while the interfascicular cambium only differentiated into wide ray of parenchyma tissue.

随着茎的继续发育，维管形成层开始活动，由束中形成层产生次生韧皮部和次生木质部分子；而束间形成层仅产生薄壁细胞组成宽的射线。