They are listed on the closely guarded microfilm.它们列于一卷严格保管的缩微胶卷上.A device for reading materials in microform, such as microfilm and microfiche.显微阅读器用以阅读缩微成像, 如缩微胶卷和缩微平片上的材料的仪器.Tomorrow we'll look at microfilm recor...
Such information is easily transferred onto microfilm.这种信息很容易转存到缩微胶卷上。Tomorrow we'll look at microfilm records for several months back.明天我们将去检查前几个月的缩微胶卷记录.They are listed on the closely guarded microfilm.它们列于一卷严格保管的...
流入湖中的泉水和河水携带了溶于水的硝酸盐和磷酸盐。Springs and rivers that drain into lakes carry dissolved nitrates and phosphates.硝酸盐是水和土壤中自然存在的化学物质。Nitrates are chemicals that occur naturally in water and the soil.硝酸盐由土壤渗入江河。Nitrates leach fro...
镁铝尖晶石的合成方法有电熔法和烧结法.The synthesis methods of magnesia - alumina spinel are electro - fusion and sintering process.含尖晶石的耐火材料广泛应用于冶金行业.Spinel containing refractories are widely used in metallurgical industry.浇注料的抗渣性与镁砂含量和尖晶...
为确定恰当的普查方法,人们建议踏勘性普查.Orientation survey to establish the most suitable search techniques are recommended.空中测取水面热图是踏勘性研究的一种快速方法.Thermal mapping of the water surface from the air is a fast method for reconnaissance studies...
The Endo - conversion 、 Exo - yield andExo - selectivity are 96.46 % 、93.12 % and 96.54 % respectively.Endo -THDCPD 转化率为96.46%,Exo -THDCPD 收率为93.12%,选择性为96.54%.EAD was much more readily induced in Mid than in Epi and End...
他们呼吁当局将蓄奴定为一种应该受到惩罚的罪行。They called on the authorities to make slavery a punishable offence.等你爸爸回来, 你会为这事受惩罚的.When your father comes home, you'll swing for it!关于惩罚的理论有很多，虽形式略有不同，但其主旨都是一样的。Many theories on punishment ...