sand n. 1.沙。 2.〔 pl. 〕 沙滩,沙洲,沙地,沙漠。 3.〔 pl. 〕 沙粒;(计时用的沙漏中的)细沙。 4.光阴,时间,寿命。 5.〔美俚〕勇气,毅力,胆量,坚毅。 6.【医学】砂状结石。 7.【地质学;地理学】含石油砂层。 8.粗矿石;尾矿;【冶金】模砂。 9. 砂色;带红的黄色。 10.〔美俚〕砂糖。 quick sand 流沙。 play on the sands 在沙滩上玩耍。 The sands [His sands] are running out. 期限快到[他的命数将尽]。 a man with plenty of sand in him 坚毅的人,刚强的人。 built on sand 不稳固的;不安定的。 footprints on the sands of time 留在人世变迁的沙滩上的脚印。 have sand in one's craw 〔美口〕有勇气[决断,毅力]。 knock the sand from under 〔美国〕使失去立足之地;(设法)占上风。 make ropes of sand 用沙结绳;做不可能[徒劳无功]的事。 numberless as the sand(s) 多如恒河沙数。 number [plough, sow] the sands 白费气力,徒劳。 put sand in the wheels [machine] 捣乱,暗中破坏。 vt. 1.撒沙于,铺沙于,把…埋进沙里,用沙搀入。 2.用沙[砂纸]擦[磨光]。 3.使(船)开上沙滩。 sand up 用沙填塞(油井等)。
Application of artificial sands in shotcrete support of tunnel 人工砂在隧道喷射混凝土支护中的应用
Effects of artificial sand - fixation communities on soil nutrients and biological properties in horqin sandy land 科尔沁沙地不同人工植物群落对土壤养分和生物活性的影响
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,由于研究过程中使用的是pae粉末和机制砂,与水泥按比例混合均匀后,易于包装、运输和使用,为建筑砂浆的工业化生产打下了基础。
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年固沙区,原来的花棒+柠条+油蒿为主的人工系统向油蒿+雾冰藜+小画眉草+隐花植物为主的半人工半天然系统的演变。
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 在风力侵蚀地区,应当采取开发水源、引水拉沙、植树种草、设置人工沙障和网格林带等措施,建立防风固沙防护体系,控制风沙危害。