The use of soil analyzers for the determination of heavy metals in the soil, the pretreatment method used concentrated acid open digestion method, but the method of long digestion time, large smoke, easy to lose.
The combination of hydrofluoric acid is used for digestion and…
In addition to the quality and quality of the seeds, germination of plant seeds has a lot to do with the external environment such as light, temperature, humidity, and nutrients. The science uses the artificial climate box to monitor and observe the germination process of the see…
Recently, Yao Jie, Deputy Secretary General of the China Automobile Association, told reporters that the most important contradiction in the implementation of the four national emission standards for commercial vehicles is the “inconsistent vehicle oil†an…
In recent years, we have seen…
Recently, a group of Lingyu Guoliu liquid tank bicycles arrived in Taiyuan, Shanxi Province, and delivered the customers, completing this extraordinary order.
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After China’s commercial vehicle comprehensive country III was implemented in March, all parties’ arguments, such as the vast sky, make it difficult to count. The users of ordinary commercial vehicles have seen the flowers and tremble in the fog from the initial state o…
In Yangping Township, Yuan’an County, Hubei Province, villagers can see a green clean vehicle passing between garbage collection houses and landfills every day. "On average, it is necessary to clear and transport 7 miles a day to get all the rubbish out o…
China Automobile Association recently released sales data for the first half of this year, showing that in the first half of 2013, the cumulative sales of domestic trucks totaled 1,819,855, an increase of 7.44% year-on-year, and they entered a relatively stable development stage, among wh…