Long skeins of geese were flying over the rooftops .

一群群大雁正飞过屋顶。

The picture is dominated by the enormous structure of gas that threads the space between the stars with skeins and clumps of glowing hydrogen .

星系之间线状和簇状发光氢气在宇宙中纵横交错的巨大结构占据了图片的主要部分。

On this foundation an investigation on such problems as the number of sample skeins during size designing was also made , which may serve as a reference for engineering technicians .

在此基础上,又探讨纤度设计时的样茧粒数、二区茧丝纤度的允许差值等问题,可供工程技术人员参考.