查询词典 twenty-acre

By 1973 about 10% of men aged from eighteen to twenty-one were in universities and about 5% of women.

在1973年，18到21岁的男性有10%在大学读书，女性大概有5%在大学读书。

Methods One hundred and twenty eight children with bronchopneumonia aged from 5 months to 12 years were selected.

选择128例支气管肺炎住院病例，年龄5个月～12岁。

Methods Twenty-five patients, aged from 28 to 70 years (mean age 45.36 years, 5 men and 20 women), were recruited.

选取 2 5例RA患者，其中女 2 0例，男 5例，年龄为 2 8～ 70岁，平均 4 5 。36岁。

He had spent much of the day tidying up Agnew's resignation, to be announced within twenty-four hours.

阿格纽将于二十四小时内宣布辞职，他那天大部分时间用在处理这件事上。

Methods Twenty adult New Zealand albino rabbits were randomly divided into two groups: experimental group and control group.

取成年新西兰大白兔20只，随机分为实验组和对照组。

Twenty-five Wistar rats were divided into three groups: lactic acid bacteria feeding group; alcohol feeding group and control group.

5只Wistar大鼠，分为乳酸菌保护组、酒精攻击组和对照组，共服用 5天。

I've always wanted to see Africa, but I never got there except for a twenty-four-hour stay once in Algiers.

我总想去一次非洲，可是除了在阿尔及尔停留过二十四小时外；就没有去过非洲其它地方。

Our company specialized in manufacturing and managing of tyre changer, wheel balancer, aligner, lifter and nitrogen gas machine. Five series and more than twenty models.

本公司主要生产经营各种型号的轮胎拆装机、轮胎平衡机、四轮定位仪、举升机、氮气机等五大系列20多个品种的产品。

98 premature infants were randomly divided into three groups, one group adopted the intravenous alimentation, the rest two group were fed in digestive tract, one of the two were selected as head-high-feet-low posture at an angle of twenty degrees.

方法选择 98例早产儿，分成三组，一组采用静脉内营养，其余两组在消化道喂养同等条件下，对其中一组采取头高脚低(成 2 0°角)斜坡位。

The protein content, flax acid content and twenty carbon alkene acid content are increased with the increase of density.

种植密度对鹰嘴豆维生素B1和油酸含量的影响不显著。

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。