Bird species adapted to the Kalahari are generally Horns and Blowers either (a) sedentary, insectivorous (or carnivorous) and non-gregarious, or (b) nomadic, granivorous and gregarious even when breeding.Ground-dwelling birds predominate numerically and are cryptically coloured to avoid predation.Many species have nasal glands which secrete hyperto

LNG corrugated hoses have better flexible mechanical properties and compliance.However, due to the influence of its outline structure and the large heat transfer coefficient, large heat loss is caused during LNG transportation, with the transportation efficiency reduced.Therefore, the flow and heat transfer characteristics of LNG in the plain tube