The sulfide assemlage consists largely of pyrrhotite, pentlandite, chalcopyrite, and pyrite.硫化物集体大部由磁黄铁矿 、 镍黄铁矿 、 黄铜矿及黄铁矿组成.The hydrogen sulfide is often blamed for the corrosion.硫化氢常常引起腐蚀.Lithopone: B 301 lithopone: whi...
It's a constant struggle to try to keep them up to par.要让他们达标，需要不断努力。Curiously, the struggle to survive has greatly improved her health.奇怪的是，她拼命求生的抗争使得她的健康状况大有好转。He grandly declared that "international politics is a...
Certain chemicals can induce undesirable changes in the nervous system.有些化学物质能在神经系统中引起不良变化.However , some synthetic chelates have been shown to induce the uptake of metals by plants.许多螯合剂能诱导植物对重金属的吸收.She was using all he...
A limousine swept her along the busy freeway to the airport.一辆豪华轿车载着她沿着拥挤的高速公路飞速驶向机场。The speed limit on the freeway is 55mph.高速公路限速每小时55英里。an accident on the freeway高速公路事故...
他用铁笔把设计图刻在蜡纸上.He drew the design on the stencil with a steel stylus.师傅用的这种铁笔啊,是特制的.Using a specially - made stylus.伯19:24用铁笔镌刻、用铅灌在磐石上、直存到永远.That with an iron stylus and lead They were engraved in the rock forever!...