During periods of low demand, jockey pumps are used to meet these lower water flow requirements.
在需求较低的时期，赛马泵用于满足这些较低的水流量要求。
A keel also provides weight low under the water to lower the boat's center of gravity below the waterline, which is needed so that the boat bobs back upright if knocked over by wind or waves.
龙骨同时也增加了船只的底部重量，从而将船只重心降到吃水线之下，而这对于船只在被风浪打翻时能够得以及时回正是十分必要的。
In the same condition, the lower the salinity of stratum-water and the stronger the additional conductivity influence, the easier the make of low resistance oil layer.
同等条件下，地层水矿化度愈低，附加导电作用愈强，愈容易形成低阻油层。
Recent achievements of appropriate soil moisture and lower limit of soil drought indices provided an important basis of soil physics for agricultural water supply of low quota.
土壤适宜含水量和土壤干旱下限指标的最新研究成果，为低定额的农业供水提供了土壤物理学的重要依据。
The water in the basin may be allowed to completely infiltrate or, in some low permeability soils, the excess may be drained onto a lower basin after a specified time.
格田里的水可以完全渗入土壤，或对一些渗透性较差的土壤，在保持一段特定的时间后，把多余的水排到较低的格田里。
Generally, water stress and low nutrient supply resulted in the lower grain nutrient concentration, and nutrient uptake and uptake efficiency.
水分胁迫和低肥处理减少小麦籽粒养分含量、(整株)养分吸收量和吸收效率。
Under the same soil drought status, leaf water potential under high nitrogen level was lower than that under low nitrogen level.
在相同干旱胁迫下，低氮处理的叶水势高于高氮处理的叶水势。
All of which show the initial water saturation is lower than the irreducible water saturation, that is, there exists ultra-low water saturation in the c.
这说明该油气藏初始含水饱和度低于束缚水饱和度，即存在超低含水饱和度现象。
The Middle and Lower Yangtze Valley Plain is low and flat, densely covered with rivers and lakes, and enjoying the reputation of a "water village".
长江中下游平原地势低平，河湖密布，素有“水乡泽国”之称。
Problems like difficulty for epoxy firming agent of low-molecular amine to be inter-connected and firmed in water or at lower temperatures have been solved.
解决了低分子胺类环氧固化剂无法在水中、低温环境中交联固化的问题。
There exist many disadvantages of the single WPU emulsion, such as poor self-thickening, low solid content, weak water resistance, lower mechanical strength compared to acrylic resin and high cost.
单一的水性聚氨酯分散体存在自增稠差、固含量低、耐水性差、机械强度不如丙烯酸树脂等缺点，而且成本较高。
Low energy consumption: this machine consumes 0.1KW per hour, water usage is lower than 200ML per hour.
节电节水、能耗低：本机耗电每小时低于0.1KW，冲洗水低于200ML/小时。
The invention has the advantages of low manufacturing cost, rapid water lever dynamic response at high temperature, and lower water level measurement error.
本发明制造成本低，高温时水位动态响应迅速，水位测 量误差小。
The invention has the advantages of low manufacturing cost, rapid water lever dynamic response at high temperature, and lower water level measurement error.
本发明制造成本低，高温时水位动态响应迅速，水位测 量误差小。
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