Prismatic crystals of Natrolite on Analcime, forming an interesting cluster, Together with Hematite included Thomsonite.
状的

在方
上,有著像是放射状的晶簇.与内含赤铁矿而成红
的杆
.
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When a voltage is applied across two beamlike electrodes made of aluminium, which are separated by a gap of around 50 nanometres, charge builds up on each, creating an attractive force between them, until a critical point is reached.


状的铝电极间隔约50纳米,当电压加在这
电极之间时,它们就会相互通电,在二者之间会形成一股引力,直至达到一
临界点。


听力全真试题 4 It is composed of what sounds like a bizarre mixture: fly-ash, a fine-grained waste product from coal-fired power stations; carbon nanotubes, cylindrical molecules made of elemental carbon; and two binding agents, sodium silicate and sodium hydroxide.
煤灰,火力发电厂排放的细颗粒废弃物;碳纳米管,即
状的碳分子;还有
种黏合剂:硅酸钠和氢氧化钠。