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  William William wrote a new blog entry:

  To understand the advanced support of tunnel pipe shed at one t

  Original title: Understand the advanced support of tunnel pipe shed at one time. There are too many detailed words. You need to collect them first! Source: Zhulong Forum Copyright belongs to the original author. As an auxiliary method of tunnel excavation...

  • August 25, 2022
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  William William wrote a new blog entry:

  Geological down-the-hole drill _ rock drilling

  Original title: Geological down-the-hole drill Down-the-hole drill Portable down-the-hole drill is a new type of energy-saving and efficient rock drilling equipment,overburden drilling systems, which is widely used in medium and small mines,fastest dth ha...

  • August 25, 2022
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  William William wrote a new blog entry:

  The most complete knowledge of open-pit mining, mining people h

  Original title: The most complete knowledge of open-pit mines has been collected by miners! Strip mining is the extraction of valuable minerals from open pits. Mechanical mining: mining hard ore and rock, with deep-hole blasting and mechanical mining as t...

  • August 25, 2022
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  William William wrote a new blog entry:

  "2018 Top Ten Chinese Hob Brands General Evaluation List" Glory

  Original Title: "2018 Top Ten Brands of Chinese Hob" Honorably Announced "Top Ten Brands of Chinese Hob in 2018" is the most extensive and largest comprehensive brand strength ranking activity sponsored by Brand Ranking Network. This selection, collecting...

  • August 25, 2022
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  William William wrote a new blog entry:

  The decarboxylation reaction, which has been studied for more t

  Original title: The decarboxylation reaction, which has been studied for more than 200 years, can become a hot spot again in this way. Previously, we introduced the recent progress in the study of photoredox-catalyzed C (sp 3) -H arylation reactions (). T...

  • August 25, 2022
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  William William wrote a new blog entry:

  Precautions for use and maintenance of rotary evaporator _ vacu

  Original title: Precautions for use and maintenance of rotary evaporator Rotary evaporator is a kind of evaporation instrument widely used in laboratory. It is suitable for reflux operation, rapid evaporation of a large amount of solvents, concentration o...

  • August 25, 2022
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  William William wrote a new blog entry:

  [Hotspot!] Kangri Baiao Successfully Completed 50 L to 2000 L P

  Originally published as [Hot!] Kangri Baiao Successfully Completed 50 L to 2000 L Partner Project Production February 2022, Suzhou Kangri Baiao has completed the partner 2000 L clinical phase II sample production project in December 2021, which is directl...

  • August 25, 2022
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  William William wrote a new blog entry:

  Short-path molecular distillation equipment operation process _

  Original title: Operation process of short-path molecular distillation equipment During the operation of the short-path molecular distillation equipment, it is necessary to pay attention to certain operation procedures to avoid the unavailability of the e...

  • August 25, 2022
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  • August 25, 2022