The heptanal butyl mercaptan was synthesized with heptanal, sodium thiosulfate and 1 bromobutane as raw materials.以正庚醛 、 硫代硫酸钠和溴代正丁烷为原料,合成了正庚醛正丁硫醇缩醛.Keep the rough edge of the fabric aligned with the raw edge of the pipi...
Use separate chopping boards for raw meats, cooked meats, vegetables and salads.切生肉、熟肉、蔬菜和拌色拉的青菜时要使用不同的切菜板。The mere mention of John had touched a very raw nerve indeed.提到约翰就真的让人心痛。He also wanted to see Bangladesh in the ...
He showed him how to blow into the ivory mouthpiece.他给他演示如何吹奏象牙吹口乐器。The Ivory Coast became the world's leading cocoa producer.象牙海岸成为世界上可可粉的主要产地。a ban on the ivory trade象牙贸易禁令...
Of course, the British will suffer such daily stresses patiently.当然，英国人将会耐心地承受这些日常压力。By this reckoning, a flexible body learns to acclimatize to stresses.由此可以判断, 灵活可塑的身体学会适应压力.Some students are completely struck down by ...