和这个计划不同，更多研究者的努力方向是使用轨道高度22300英里的地球同步卫星，它们和地球的位置相对固定，可以不间断地传送能源。
Moststudies have focused instead on geostationary satellites, those whoseorbit 22, 300 miles above the Earth keeps them over a single location, to which they would transmit a continuous flow of power.
通过对2，4-D浓度及生长发育时间的控制获得了高度同步化的各发育阶段体胚材料。
Synchronized embryogenic cultures at different developmental stages were obtained by controlling 2,4-D concentration and developmental time.
同步叶片修剪与植株密度并不影响植株的发育，对植株高度也没有显著影响。
Both plant development and height were influenced neither by synchronous leaf pruning nor by plant density.
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