The stability and space correlation about the sky wave propagation time - delay in Loran - C system are studied.研究了罗兰 -C 天波传播时延的稳定性与空间相关性.artificial propagation of fish鱼类人工繁殖Clonal propagation can also give some large ga...
If a plant has spotted or crinkled leaves, do not use it for propagation.如果植物的叶子有斑点或者萎缩，就不要用来繁殖。Rose propagation has a long and rich history.玫瑰繁殖有着悠久的历史。Such rootstocks or cultivars were reproduced true to type by vegeta...