砂小石頭 的英文怎麼說
中文拼音 [shāxiǎodàntóu]
砂小石頭
英文
beach-
The boy sat down on a stone to take a pebble out of his shoe when he saw a stranger approaching him
當小男孩兒看見一個陌生人向他走來的時候,他正坐在一塊石頭上摳出鞋子裏面的砂石。The conclusion is that iron ceramics media has a lot of advantages over sand media in the fields of filter run and yield. it has good quality of little hydraulic pressure loss, longer period and capabilities of impurity
結果表明,塗鐵陶粒濾料濾池具有過濾水頭損失小、運行周期長、截污能力強的優點,其過濾性能優于石英砂濾料濾池。Pebbles and gravel also insulate the soil to keep surface temperatures low and preserve water
小石頭、砂礫層也可用來做隔絕層,以保持水分,降低土壤的溫度。
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