查询词典 arrowleaf

Salt absorption, transpiration induced water uptake and the radial reflection coefficient of the root system of arrowleaf saltbush were measured in order to analyze ultrafiltrational characteristics of its root system in relation to salt tolerance of the plant.

对耐盐蔬菜三角叶滨藜在盐胁迫下的蒸腾吸水量、Na吸收和根系径向反射系数进行了测定，分析其根系超滤特性与植物耐盐性的关系。

This indicated that arrowleaf saltbush was able to change the ultrafiltration characteristics of its root system and reduce radial reflection coefficient of the root, thus lowering the risk of higher xylem tension leading to xylem cavitation and able to reduce salt absorption to avoid damage of salt over-accumulation to the plant.

说明三角叶滨藜在盐胁迫下一方面通过改变根系的超滤特性，降低根系径向反射系数来防止木质部拉力过大导致的木质部空化的危险，另一方面通过减少对盐分的吸收来避免盐分过多积累对植株的伤害。

The distribution of Na(superscript +) in intracellular and extracellular spaces in leaves of arrowleaf saltbush subjected to salt stresses was investigated by using a scanning electron microscope facilitated with an Auger electron spectrometer. The role of salt bladders in salt resistance of A. triangularis was analysed in terms of salt accumulation and secretion.

用扫描电镜和能谱仪测定不同浓度NaCl胁迫2 wk后的三角滨藜幼叶和成熟叶中Na在细胞外和细胞内的分布情况，并利用原子吸收分光光度计测定叶片中Na的积累量，同时还观测了盐囊泡及其与盐的积累、分泌之间的关系。

The distribution of Na^＋ in iutracellular and extracellular spaces in leaves of arrowleaf saltbush subjected to salt stresses was investigated by using a scanning electron microscope facilitated with an Auger electron spectrometer. The role of salt bladders in salt resistance ofA. triangularis was analysed in terms of salt accumulation and secretion.

用扫描电镜和能谱仪测定不同浓度NaCl胁迫2wk后的三角滨藜幼叶和成熟叶中Na^＋在细胞外和细胞内的分布情况，并利用原子吸收分光光度计测定叶片中Na^＋的积累量，同时还观测了盐囊泡及其与盐的积累、分泌之间的关系。

The work of this paper is as follows: 1. Looking back the progressing history of the linear motor, introducing the features of the elevator driven by linear induction motor, radicating the topic of this paper "the digital frequency variable control of the elevator bi-side direct driven by linear induction motor". The research of this paper covers the conventional VVVF control, space vector based VVVF control, vector control and DTC.

本文主要开展了以下几个方面的工作： 1 回顾了直线电机发展历史，电机的驱动技术演变，特别是针对直线电机的驱动，简要介绍了直线感应电机驱动电梯的优点和不同结构类型，对传统的v／f控制，基于空间矢量法的v／f控制，矢量控制，和基于电压空间矢量的直接转矩控制进行了比较，确立了本课题的研究主题：直线感应电机双边直推式驱动电梯的全数字变频控制。

The article combines with the treatment of a superficial civil air defense work to introduce how the grouting method to improve the performance of the backfill soil.

文章从治理漂浮人防工事的角度提出了注浆技术在改善回填土性质方面的应用，并详细阐述了注浆技术的施工流程。