At the beginning of the new year, there were widespread cold freezing, snowfall or sleet weather in Guizhou and Hunan, and the temperature dropped below 0 °C. Affected by low-temperature freezing disasters, many agricultural crops are affected by disasters. It is expected that there will…
The cold wave weather process in Guangdong in the early period has a great impact on winter crops in the central and northern regions. Millions of acres of crops are affected, and winter vegetables and fruits with poor cold tolerance ar…
For beginners, mastering some of the new features and techniques of CAD is a multiplier for improving design. The introduction of the new version of the latest Zhongwang CAD2011 has added more than ten new features, including new field functions. Now let's share this feature with ev…