cross tracheid;ray tracheid是什么意思

用法例句

This paper gives the principle frame image of angle welding radial detection,evaluates its safety property and reliability,and describes its application.

本文对在用废热锅炉管板角焊缝的射线检验技术进行了详细介绍,并对检验可靠性进行了详细讨论。

Novel image reconstruction algorithm for muti-phase flow tomography system using γ ray method;

基于γ射线多相流成像系统图像重建算法

Resonace absorption research of matter to rays and its prospect of application;

物质对射线的共振吸收研究及其应用前景

Working principle of the KD 421 γ ray micro computerized productivity meter;

KD-421γ射线微机产量计工作原理

Objective: This study is to use electronic portal imaging device (EPIDs) to analyze the symmetry and flatness of radiation field for linear accelerator, trying to provide an easy way for routine quality assurance to save time and reduce workload.

目的:利用带电子射野影像装置(electronicportalimagingdevice,EPIDs)对射线野的对称性和均匀度进行测量,以替代常规的测量手段,更可以达到节省人力物力和时间。

It was indicated that those stem cuttings of Eucalyptus species, which had relatively developed and relatively lignified rays, relatively high content and relatively extensive distribution of phenol substances, were easy to form root primordia.

各种桉树扦插生根能力不同 ;通过对刚果 12号桉W5无性系 ,尾叶桉MLA无性系 ,窿缘桉 ,柠檬桉插条茎解剖结构和其内含物多酚物质分布研究发现 ,桉树的射线相对较发达 ,木射线木质化程度相对较低及多酚物质含量多 ,分布广 ,较易产生诱导根原