水面计

For the in-situ work of spectrum-measuring in the Case-II waters, especially in the Pearl River Estuary, the above-water measuring technique is recommended. When on a boat, the height of sensor can vary in a scope of 1-5m above the sea surface, and the atmospheric effects can be ignored.

对于二类水体的现场光谱测量，特别是在珠江河口水域，宜采用水面以上光谱测量法；采用船基水体光谱现场测量，探头在合理的高度(如5米)范围内变化，大气的影响可忽略不计。

It is said that millions of sardines migrates from cold sea area for spawn in Capetown to the east for zooplanktons to prey. However, what wait for them are armies of predators, including of porpoies, doradoes, sharks, sea dogs and whales. Some solans and sea-gulls also dive into the sea to attempt to prey sardines, but sometimes they themselves become victims of sharks.

据悉，每年数以百万计的沙丁鱼将从开普敦较冷的产卵水域向东迁徙寻找浮游动物为食，然而等待它们的却是一群猎食大军，其中包括：海豚、剑鱼、鲨鱼、海豹和鲸，在水面之上还有塘鹅和海鸥盘旋着，试图寻找机会潜入水中捕食沙丁鱼，但有时潜入水中的鸟类也会成为鲨鱼的捕食对象。

Measure light intensity on the water surface and at the bottom by a light probe connected to light meter .

用连接在光照度计上的光探头测量水面及水底的光照度。

This study choose Changle Gaoya reservoir irrigation areas as the study sites, through the installation of different ultrasonic equipment on open channel of non-uniform flow to study the flow gauging of non-uniform flow in open channel:(1)5 tracks ultrasonic open channel flow meter used to real-time monitoring the flow of velocity ,water depth and discharge;(2)Ultrasonic liquid level gauge used to real-time measure the upper level and tail level of the two sections ,then the computer calculated average water level, gradient of water table and discharge;(3)Change the open channel water conveyance into pipeline full flow water conveyance, installed the ultrasonic liquid level gauge and pipe flow gauge on the inflow point and surface of pipe, water level and discharge would detect in real time.

本研究以山东省昌乐县高崖水库灌区为研究地点，通过安装在灌溉明渠上的不同超声波设备对明渠非均匀流的测流进行了研究：(1)用五声波超声波明渠流量计对测流渠段的流速、水深及流量进行了实时监测；(2)用超声波液位计将测流渠段的上下游两断面水位实时测出，再用计算机分时段算出平均水位、水面坡降及流量；(3)将测流渠段明渠输水改造成管道满流输水，分别在管道进口前及管管上安装超声波液位计和管道式流量计，将水位和流量实时测出。

As the Separatist crisis began to come to light, however, it was Praji who closed Coruscant's borders to newcomers, and billions of displaced immigrants were turned away, leading to masses of refugees crowding Coruscant's spaceports.

然而，分离主义危机浮出水面后，普拉吉关闭了科洛桑的入境大门，数以百万计背井离乡的移民被赶走，导致科洛桑各地的太空港都拥堵着大批难民。

But when I got to shore pap wasn't in sight yet, and as I was running her into a little creek like a gully, all hung over with vines and willows, I struck another idea: I judged I'd hide her good, and then,'stead of taking to the woods when I run off, I'd go down the river about fifty mile and camp in one place for good, and not have such a rough time tramping on foot.

不过我一上岸，不见爸爸的影子。我把小舟划到了一条类似溪沟的小河浜里，水面上挂满了藤萝和柳条，这时我心生一计。我断定，小舟我能藏好，不会有差错，等我出逃时，不必钻树林子了，不妨下到下游五十英里开外的去处，挑一个地方露营扎寨，免得靠双脚走，搞得累死累活的。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。