They spend most of their time out of doors.

The nurses keep children out of doors as much as possible.

兼做保姆的家庭教师，保育员保育员尽量让孩子在室外活动。

A party of people assembled for social interaction out of doors.

人们在户外为社交举行的聚会。

We often have our food out of doors in summer.

我们夏天经常在室外吃饭。

It's good for children to play out of doors.

在户外玩耍对孩子们有好处。

Her father threatened to turn her out of doors.

她的父亲扬言要赶她出门。

Sometimes we eat out of doors

我们有时候在户外吃饭。

By simplifying the platform as a single freedom rigid body and spring system, the natural period of heaving and rolling are calculated by determining some parameters from test.

气浮体的自由运动周期采用单自由度弹簧体系来计算，部分参数通过试验确定。

Result indicates: Structural displacement response is largest as inputting Tianjin seismic waves, for its characteristic period is closed to the natural period of vibration of the model.

结果表明：由于天津波的特征周期与所采用模型的自振周期比较接近，因此输入天津波时反应最大；

The natural period of vibration, the displacement at the top of building and rotation angle of each floor and mode shape are obtained from the elasticity analysis.

通过分析，得出多遇地震下结构的周期、顶点位移、层间位移角、振型等；

The study shows that the irrational filled wall layout, the lateral stiffness of the structure will be larger and the natural period will be smaller.

研究表明在布置填充墙以后，由于侧向刚度变大，结构自振周期减小。

Traditional base isolation is realized by adding base isolation systems between the structure and foundation. The principle is to lengthen the natural period of the structure.

传统的基础隔震建筑通过在结构底部和基础之间增加隔震体系达到隔震效果，其原理在于延长结构自振周期。

By presenting the air buoyancy decreasing coefficient and referring to tests, the natural period of heaving and some dynamic properties are discussed.

引进气浮力折减系数并结合试验，对气浮结构的动力学特性进行了分析；

Study on the influence of the infilled walls for the steel staggered truss structure about natural period and modal of vibration based on many analysis models.

通过对多个结构模型进行模态分析，研究了填充墙对钢交错桁架结构的自振周期及振型的影响。

The experiment's results indicate that FPS is an effective isolated device which can length the natural period and reduce the earthquake effect on upper structure.

试验结果分析表明：FPS摩擦摆隔震装置能够有效地延长上部建筑物的自振周期，减少地震作用对上部结构的影响，隔震效果明显，不失为一种有效的隔震装置。

The results show that, compared to natural period, contributions of climate change and human activities on runoff change calculated by the two methods are consistent.

结果表明：相对于天然阶段，在整个人类活动影响阶段，两种计算方法得到的气候变化与人类活动对径流影响的贡献量在大部分流域取得了比较一致的结果。

Methods Use ultrasound B to observe ova developement of 70 patient's 72 natural period and 50 drug ovulation period.

方法利用B超对70例不孕患者的72个自然周期及50个药物促排卵周期的卵泡发育情况进行观察。

It is pointed out that birth pulses provide a natural period or cyclicity that makes the dynamic behaviors more complicated.

这说明生育脉冲能使系统出现各种周期震荡，使系统的动力学行为变得非常复杂。

The approximate calculation method on fundamental natural period of vibration for multistorey and high-rise steel frame structure of flexible connection

柔性连接多高层钢框架结构的基本自振周期近似计算方法

Calculation of Natural Period in Longitudinal Direction of Single-Storey Multiple-Span Factory Buildings

多跨等高单层厂房纵向结构基本自振周期的计算

The calculation of the structural fundamental natural period is the critical problems of and-seismic calculation.

结构的基本自振周期的计算是抗震计算的关键问题之一。