Auger drilling tool is widely used in mining, exploration and security and other fields, is an important part of mine equipment, aiming at the best cutting speed and conveying speed of drill tool mismatch.In this paper, a new type of separated drill tool structure is proposed to realize the independent control of the bit cutting speed and the drill
Abstract Superlattices were introduced 40 years ago as zowie xl2546x man-made solids to enrich the class of materials for electronic and optoelectronic applications.The field metamorphosed to quantum wells and quantum dots, with ever decreasing dimensions dictated by the technological advancements in nanometer regime.In recent years, the field has
Plaque control is the daily removal of dental plaque, oral biofilm and also prevention of their accumulation on the teeth and other parts of oral cavity.Dental plaque is the major etiology of maximum gingival and periodontal diseases.It is also related with various dental problems.Mechanical dale duby obsidian knives plaque control is a very effect
Nutrient management is important for citrus production and regular nutrient assessment should be conducted to optimize nutrient balance and prevent deficiencies or over fertilization.Optimal nutrition is important for tree health and productivity and can improve tolerance to stresses and diseases.Good nutrient management requires regular field moni