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[医] 皓矾, 锌矾, 硫酸锌
- zinc sulfate硫酸锌
- zinc sulphate硫酸锌
- zinc vitriol锌矾,七水合硫酸锌...
单词:white vitriol 相关文章
Technology Report - How to Make Your Own Solar Water Heater This is the VOA Special English Technology Report. Solar water heaters are used around the world and are not very difficult to build. The system we are going to describe is based on a design
An undercover probe conducted by China Central Television has revealed just how easy it can be to obtain fraudulent inspection certificates. Reporters in Shandong's capital, Jinan, were able to obtain fake emission permits from local garages, as well
DEVELOPMENT REPORT – How to Make a Solar Water Heater By Gary Garriott Broadcast: Monday, November 29, 2004 I'm Gwen Outen with the VOA Special English Development Report. Solar water heaters save o
This is the VOA Special English Development Report. Solar water heaters are devices that use energy from the sun to heat water. Solar water heating is used around the world. An example of a rooftop solar water heater being built in South Africa The
The World Health Organization, upgrading a previous warning, said June 12 that diesel exhaust causes cancer and called for tighter emissions standards, comparing the risk of exhaust to second-hand cigarette smoke. Tuesdays announcement comes after in