gravel bed 中文意思是什麼
gravel bed
解釋
礫石層-
Liquid flow measurement in open channels. sampling and analysis of gravel - bed material
明渠液體流量的測量.礫石河床材料分析和取樣 -
Measurement of liquid flow in open channels - sediment transport - sampling and analysis of gravel bed material
明渠流量測量.第10部分:沉積物夾帶.第10e節:礫石河床材料取樣和分析 -
Coarse gravel or crushed rock laid to form a bed for roads or railroads
道碴用來鋪公路或鐵路路基的粗砂礫或碎石 -
The region and the earth surface across this road are mainly water above ground and run - off and the ground water is mostly made up of groundwater and perched water ; the river bed is more obvious ; the overbank is covered by medium sand and gravel ect
路線所經地帶地面主要為地表水和徑流，地下水主要以潛水和上層滯水為主，河床較明顯，河灘覆蓋中砂、礫石等。地勢低洼地帶地表常年積水，影響路基穩定。 -
Large gravel bed
大礫石層 -
The prospector panned out bits of sand and gravel scooped from the bed of a stream
探礦者淘選從河床里挖出的少量含金泥沙和砂礫。 -
In this paper, gravel characteristics and variety along the river were studied with digital image technology ; variety of grain sizes distribution of the river bed along jinmahe section in minjian river was analyzed ; several representative formulas of bedload transport rate were proved according to the field data of dujiangyan
本文採用數字圖象技術研究了卵石顆粒的幾何特徵及沿程變化；分析了岷江金馬河河段河床質級配的沿程變化；根據都江堰的輸沙率資料論證了幾家有代表性的推移質輸沙率公式的實用性。 -
Hokutolite is a natural substance produced in the peitou creek about 90 meters downstream from the hot spring. as water from the spring flows into the stream it cools, and after a certain distance, when the temperature drops to around 80, the mineral - saturated water forms a crystalline deposit on the gravel bed of the stream
北投石產于北投溪源頭下九十公尺處，當泉水與溪水混合流過一定距離后，在八十度左右的環境下，呈飽和狀態的礦物質就沈澱在河床礫石表面，形成結晶。 -
An underground bed or layer of earth, gravel, or porous stone that yields water
地下蓄水層，砂石含水層含有水的泥、砂礫或多孔石的地下河床或地層
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