您要查找的是不是：
- South China grey duck feather 华南灰鸭毛
- East China grey duck feather 华东灰鸭毛
- South China grey duck down 华南灰鸭绒
- grey duck feather 灰鸭毛
- Chinese grey duck feather 中国灰鸭毛
- washed grey duck feather 水洗灰鸭毛
- de-downed grey duck feather 低绒灰鸭毛
- East China grey duck down 华东灰鸭绒
- I fell in upon an old friend on my journey to South China. 我在去华南旅行的途中意外地遇到了一位老朋友。
- Welcome to South China Seafood Restaurant. 欢迎光临华南海鲜酒家。
- Gaoliang is grown in both north and south China. 我国北方和南方都有种植高梁的。
- Summer in south China is hot and humid. 中国南部的夏天闷热潮湿。
- I brought back some fruit from South China. 我从华南带回一些水果。
- It is grown in both north and south China. 这类植物在华南和华北都种植。
- Most of South China will be cold and wet. 华南的大部分地区将寒冷潮湿。
- Acid-hydrolysis and hydrolysate decolorized conditions for compound amino-acids production from duck feather are studied by using orthogonal tests. 通过正交实验对利用鸭毛酸水解生产复合氨基酸的水解条件及水解液的脱色条件进行了研究。
- There is a lot of rainfall in South China. 中国南方雨水很多。
- It is very warm and wet in South China these days. 中国南方现在的天气是非常潮湿闷热的。
- Moreover, duck feather structure possess good streamline to reduce the resistance when duck swims because of the slant flange on the cross section and barb at the end of feather. 麻鸭腹部羽毛的剖面呈现倾斜的凸起结构且其羽毛末端上有倒钩，使其具备了良好的流线型结构，降低了水流的阻力。
- Principal economic trees in South China. 华南主要经济树木。
