Techniques for controlling particulates include filtering, washing, centrifugal separation, and electrostatic precipitation.控制颗粒污染物的技术包括过滤 、 洗涤 、 离心分离 、 静电沉降.Guitar's experiments did not stimulate any practical stud...
她跑步的时候用头绳儿把头发扎起来.She tied her hair with string while running.注意: 钳尾绳直径至少是猫头绳直径的两倍.Note: The snubb line should be at least twice the size of the tong line....
他们因吸入大量烟尘被送往医院。They were taken to hospital suffering from smoke inhalation.他们的制服破破烂烂的，沾满了烟尘。Their uniforms are torn and sooty.烟尘在空中浮荡.The air resounded with smoke and dust....
a wildlife preservation order野生动物保护令Both superpowers shared the same instinct for self-preservation.两个超级大国都有自我保护的本能。The picture is in an excellent state of preservation.这幅画保存得极为完好.The speediest succor might avail to the ...