查询词典 palmaceous

Phynchophorus ferrugineus was the important pest to seriously damage the palmaceous plants.

红棕象甲是危害椰子树和其他棕榈科植物的重要害虫。

Brontispa longissima is a new harmful insect invading in China. At present, it has spreaded to cause damage in Hainan province, Guangdong province, Taiwan province and Hongkong which feeds on the palmaceous plants.

椰心叶甲是近年来传入我国的危险性有害生物，严重危害了我国海南省、广东省、台湾省和香港地区的椰子、槟榔等棕榈科植物，并有蔓延趋势，。

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。