The dog began to yowl.那只狗开始哀嚎。Cats yowl. My dog's hair bristles in response.这些猫的哀叫引得我的狗毛发竖立。Suddenly, the cat lets out a heart - rending yowl.突然, 那猫发出一声撕心的嚎叫....
"I'm a real intellectual-type guy, Tracy," James joked. "Oh, give me a break," Tracy moaned.“我可是个货真价实的高智商小伙儿，特雷西。”詹姆斯开玩笑地说道。“哦，别烦我了，”特雷西抱怨道。'They was his last words,'moaned Morgan,'his last words abov...
Use reducer special for plastic extruder with alloy hard - toothed surface.采用合金硬齿面塑料挤出机专用减速机.This article introduces simulation analysis methods of twin - screw extruder.本文介绍了双螺杆挤压机的模拟分析的方法.The exsolution chamber and the...