查询词典 fir pine

Small pine of western North America; having smooth gray-white bark and soft brittle wood; similar to limber pine .

北美西部一种小型松树；光滑的灰白色树皮，木质脆软；类似于狐尾松。

If the quality of the land is not very good, studies have shown that one kind of tree that can grow well is the white pine. Another is the loblolly pine.

如果土地的质量不是很好，研究表明能够生长良好的树是白松，另一种是火炬松。

Studies have shown that the white pine and loblolly pine are two kinds of trees that grow well on marginal land.

已有研究表明，五针松和火炬松是两种能在边缘土地很好地生长的树木。

If the quality of the land is not very good. Studies have shown that one kind of tree that can grow well is the white pine, another is the loblolly pine.

研究表明，如果土壤的质量不太好，有一种树木可以生长的很好，那就是美国五针松，另外一种是火炬松。

If the quality of the land is not very good, studies have shown that one kind of tree that can grow well is the white pine, another is the loblolly pine.

研究表明，如果土地质量不是很好，有一种树可以生长的很好，那就是枞，另一个为火炬松。

Studies have shown that the white pine and loblolly pine are 2 kinds of trees that grow well on marginal land.

研究表明：美国五针松和火炬松这两种树木可以在边际土地上生长得很好。

Studies have shown that one kind of the tree that can grow well is the white pine,another is L b loblolly pine.

如果这个土壤的质量不是很好，研究表明一种白色松树能长的很好，另一种是松树。

Any of several pines that prefer or endure moist situations such as loblolly pine or longleaf pine.

任何一种耐潮湿环境的松树，如火炬松，长叶松。

Another is the loblolly pine . Windbreaks pine.

另外一种则是厚皮刺果松。

BC's mountain pine beetles have thus far nested in an area nearly twice the size of the United Kingdom, killing some 500 million cubic metres of lodgepole pine — enough timber to build a modest-sized house for every person in Western Canada.

不列颠哥伦比亚省山地松树甲虫迄今在一个面积近两倍，英国的大小嵌套，造成约500亿立方米，松树，长满-足够的木材建立一个中等大小的每个人在加拿大西部的房子。

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。