An asymmetric shedding dobby which can meet this demand is introduced.提出了一种非对称梭口即可满足这类需要.Contrast Dobby's thoughtful, personalised gift with Harry and Ron's last - second thought.多比思虑体贴而且为哈利量身订做的礼物,与哈利和罗恩在最后一秒才...
蚯蚓做了使土壤透气的重要工作。Earthworms do the important job of aerating the soil.蚯蚓钻土很深。Earthworms burrow deep into the soil.他们正在挖蚯蚓作鱼饵.They were digging up worms to use for bait....
We derive the addition formulas for sine and cosine from the arithmetic of complex numbers.用复数算术推导了正弦,余弦的加法公式.The designing amendatory formulas will make the marine gearing of ship become more reasonable and safer.利用此公式计...