... 黑子数 sunspot number 精子数number of sperm 粒子数 population◇粒子数反转 inversion of the population ratio; population inversion (粒子数布居反转); 粒子数密度 population density; 粒子数守恒方程 particle-conservation equation;粒子数增加 populate ...
The result of fertilization now is a new cell that is the union of the sperm and the egg, and it's called the zygote and it contains the diploid number of chromosomes, genes.
And, since eggs are more costly to make than sperm, the numberof her descendants is limited by the numberof eggs she can grow, while a male's posterity depends more on the numberof females he can mate with.
But the true extent of the problem is largely unknown because there are no official figures on waiting lists for sperm and egg donation around the country or data on the numberof British patients travelling abroad for treatment.