sand n. 1.沙。 2.〔 pl. 〕 沙灘,沙洲,沙地,沙漠。 3.〔 pl. 〕 沙粒;(計時用的沙漏中的)細(xì)沙。 4.光陰,時間,壽命。 5.〔美俚〕勇氣,毅力,膽量,堅毅。 6.【醫(yī)學(xué)】砂狀結(jié)石。 7.【地質(zhì)學(xué);地理學(xué)】含石油砂層。 8.粗礦石;尾礦;【冶金】模砂。 9. 砂色;帶紅的黃色。 10.〔美俚〕砂糖。 quick sand 流沙。 play on the sands 在沙灘上玩耍。 The sands [His sands] are running out. 期限快到[他的命數(shù)將盡]。 a man with plenty of sand in him 堅毅的人,剛強(qiáng)的人。 built on sand 不穩(wěn)固的;不安定的。 footprints on the sands of time 留在人世變遷的沙灘上的腳印。 have sand in one's craw 〔美口〕有勇氣[決斷,毅力]。 knock the sand from under 〔美國〕使失去立足之地;(設(shè)法)占上風(fēng)。 make ropes of sand 用沙結(jié)繩;做不可能[徒勞無功]的事。 numberless as the sand(s) 多如恒河沙數(shù)。 number [plough, sow] the sands 白費氣力,徒勞。 put sand in the wheels [machine] 搗亂,暗中破壞。 vt. 1.撒沙于,鋪沙于,把…埋進(jìn)沙里,用沙攙入。 2.用沙[砂紙]擦[磨光]。 3.使(船)開上沙灘。 sand up 用沙填塞(油井等)。
Application of artificial sands in shotcrete support of tunnel 人工砂在隧道噴射混凝土支護(hù)中的應(yīng)用
Effects of artificial sand - fixation communities on soil nutrients and biological properties in horqin sandy land 科爾沁沙地不同人工植物群落對土壤養(yǎng)分和生物活性的影響
Additionally , pae polymer and artificial sand was used in the research , the mortar products were convenient in package , conveyance and application . so this paper plays a basement role of a large industry produce of mortar 另外,由于研究過程中使用的是pae粉末和機(jī)制砂,與水泥按比例混合均勻后,易于包裝、運輸和使用,為建筑砂漿的工業(yè)化生產(chǎn)打下了基礎(chǔ)。
As a result of its high capability in interception of precipitation and enhanced evaporation of soil surface , the development of microbiotic crusts will more and more threaten the soil water condition which the artificial sand - fixing vegetation should rely on 在1956年固沙區(qū),原來的花棒+檸條+油蒿為主的人工系統(tǒng)向油蒿+霧冰藜+小畫眉草+隱花植物為主的半人工半天然系統(tǒng)的演變。
In a wind - eroded region , such measures as exploitation of water resources , water diversion for sand removal , planting of trees and growing of grass , installation of artificial sand - break and forest network shall be adopted to build a protective system for windbreak and sand - fixation , thereby controlling hazards of sand storms 在風(fēng)力侵蝕地區(qū),應(yīng)當(dāng)采取開發(fā)水源、引水拉沙、植樹種草、設(shè)置人工沙障和網(wǎng)格林帶等措施,建立防風(fēng)固沙防護(hù)體系,控制風(fēng)沙危害。