急：100mm等于4in对吗?in是个什么单位?

急：100mm等于4in对吗?in是个什么单位? 100mm Hg等于多少in Hg believe in me 对吗 arrived in london对吗? in 急 50gf/2in等于多少?N/25MM 2.5LBF/IN等于多少?N/25MM请高手帮忙算算小弟感激不尽 4 mm liquid identity with font in 6.5pt 急用, 磅力/英寸 （LBS/in）等于多少 牛/毫米 N/mm in the city in which 语法对吗? 英语翻译Time to initiation of corrosion and subsequent corrosion rates of steelreinforcement in plain and microsilica-blended concretes were determinedon prismatic 100 x 62.5 x 300 mm (4 • 2.5 x 12 in.) specimens containinga 12.5 mm (1/2 in in the tomorrow afternoon对吗? 600MM*1380MM等于多少个平方米啊急 They often go for a walk in the park语法对吗?急!-8:00,在线! 1.5 inches in 2 mm and 6 mm steel in-mm是个什么单位 Fanfold 210mm*12in是什么意思 年降水量单位 in 1in相当于多少mm? in memories of our 100 days 急.