The method of weakening centrifugal force in the rotary ring flume is proposed and sediment movement under the effect of periodic reciprocating current is tested in the ring flume.
介绍了旋转环形水槽的结构和工作原理,提出了削弱环形水流离心力的方法,通过环形水槽中周期往复流泥沙运动试验得出水体含沙量与床面剪切力和水体挟沙力之间的关系。
Measures to prolong the operating period of cryogenic purification plant were discussed.
介绍深冷净化装置性能特点,分析产生周期性故障的原因是粉尘及水进入冷箱造成,探讨延长深冷净化装置运行周期的对策,对分子筛干燥器出口过滤器进行了改造,避免了过多的粉尘带入深冷净化装置。
Aimed at these factors,the process was improved ard new assistants used so that the operation of the plant should be obviously improved and operating period be prolonged.
通过对丁二烯抽提装置精制系统运行状况的分析,认为系统含氧量、物料流速、原料杂质、阻聚剂阻聚效果等是影响丁二烯抽提装置精制系统运行周期的主要因素。
On the basis of the peculiarity of distribution networks,the numerical characteristics of power flow in an operating period are extracted.
针对配电网的特点,提取了一定运行周期内的配电网潮流的数字特征———最大负荷潮流、最小负荷潮流和均值潮流。
Electrolytic micromachining system based on cathode cyclic reciprocating motion
基于阴极周期往复运动的微细电解加工系统
Recurring or moving in cycles
"周期性发生的,往复运动的"
(physics) a regular variation in value about a mean.
（物理学）相对与平衡位置的一种往复性周期运动。
tape control shuttle mechanism
纸带控制往复运动机构
workstring reciprocation
工作管柱上下往复运动
the rapid to-and-fro movements of a piston
活塞快速的往复运动.
"In the second (e.g., gasoline-reciprocating-piston engines), discrete quantities of fuel and air are periodically ignited."
后者(例如汽油往复活塞发动机)不连续的燃料和空间周期性点燃。
Having or marked by repeated cycles.
周期的，周期性的循环往复的或以此为特征的
The motion is periodic, which means it occurs identically over and over again.
这个运动是周期的，意即运动以同样的形式重复出现。
up-and-down movement
垂直往复运动;垂直运动;升降运动;上下运动
short-term autostabilizatio
短周期运动的自动稳定
This is a mechanism using a slider to transit a rotation to reciprocating the linear motion skimpily.
此机构利用一滑槽，即可简单的将圆周运动转成直线的简谐往复运动。
To move back and forth alternately.
往复运动交互地向后、向前运动
An alternating back-and-forth movement.
往复运动交互地前后运动
Business cycles are recurring cycles of economic events.
商业周期是经济活动重复发生的周期。
To move in or as if in a cycle.
周期地或者好象周期性地运动.
significant long-drift motion
大幅度长周期漂移运动
To occur in or pass through a cycle.
周期性的发生或者运动.