鲤鱼成功的跳越急滩和跃跳过瀑布, 变成鱼龙.Carp, who successfully jump rapids and leap over waterfalls, change into fish - dragons.大型吸气鱼龙具有两翼.Large air - breathing ichthyosaurs had hydrofoils.人们在黑色的 、 含沥青的海洋页岩中发现了约1.9亿年前沉积下来的鱼龙化石.The ichthyo...
疏水阀的流向要与管路流向一致.Steam trap flow direction in accordance with that of the pipe line.疏水阀是如何知道何时开启何时关闭?How does the steam trap know when to open and close?圆盘式疏水阀适用于高压差的蒸汽主管线,蒸汽管网的阻汽疏水.Disk type steam traps are for high press...
Thomas made a little grimace, perhaps he thought the wine was sour.托马斯微微皱起眉头可能是他认为酒发酸了.He acknowledged his mistake with a wry grimace.他做了个怪怪的表情,算是认了错.He took another drink of his coffee. "Awful," he said with a grimace.他...
The refrigerating performance is primarily determined by refrigerating compressor.制冷压缩机是制冷装置制冷性能的决定因素.A two stage radiant cooler applied in compound - refrigerating system ( CRS ) was developed.研制了一种适用于复合制冷系统的两级辐射制冷器.The...