perched water 中文意思是什麼
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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。 -
In the ensuing excitement, researchers advanced many theories to explain them : leaking aquifers ( which would be inexplicably perched high on crater rims ) ; pressurized geysers of water ; high - pressure outbursts of carbon dioxide gas ; volcanic heat sources at depth
在接下來的一陣狂熱中，研究者提出許多的理論來解釋： ?漏的含水層（在隕石坑外緣必須被抬升至非常高的高度） 、受壓的間歇泉、高壓噴出的二氧化碳氣體、深層的火山熱源等。 -
Perched water table
棲留地下水位 -
For one agonizing moment ， the dish was perched precariously on the bank of the canal ， but it suddenly overbalanced and slid back into the water
在令人坐臥不安的一瞬間，餡餅盤懸懸乎乎地停在運河岸邊，然而它突然失去了平衡，滑回水中。 -
For one agonizing moment, the dish was perched precariously on the bank of the canal, but it suddenly overbalanced and slid back into the water
在令人坐臥不安的一瞬間，餡餅盤懸懸乎乎地停在運河岸上，然而它突然失去了平衡，結果滑回水中。 -
Perched water level
上層滯水位
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