该工艺方法可节约能源约70％，缩短生产周期约80％。
This technique could save power (by (70%) and shorten the time of the. purification (by80 % ).
经研究，发现地极还存在长期的漂移和周期约30年的长周期摆动。
The study found that there are still a long-term polar drift and cycle of about 30 years of long-period oscillation.
因为目前的太阳正逐渐接近它的“活动峰年”，也就是周期约为11年的地磁活跃高峰期。
The sun is currently approaching what's known as solar maximum, the peak of our star's roughly 11-year cycle of magnetic activity.
这一周期约90%的时间为冰川时代，在那期间，我们北半球大部分覆盖着厚达数英里的冰层。
During glacial ages that exist about 90% of the time, our Northern Hemisphere is mostly covered with ice up to several miles thick.
根据测算，以预售方式进行销售的项目，比现售方式进行销售的项目的开发动态回收周期约缩短10个月。
According to estimates, pre-sale approach to marketing the project, more than the item is on the way to develop a dynamic sales recovery cycle about 10 months shorter.
将安排列车运行线的问题看作周期事件安排问题，并借助周期约束图及周期势差模型，可以建立周期运行图网络模型。
Considering arranging train paths as arranging a periodic event, in virtue of the periodic constraint graph and the periodic tension model, the periodic train diagram network model is established.
南赤道带在1973年和上世纪九十年代早期都消失过，如果说这次消失有什么不同之处的话，就是它发生得比预计晚了一点（因为，推测出的消失周期约为15年）。
The belt took leaves of absence in both the early 1990s and in 1973, so its disappearance now, if anything, is a bit overdue (it seems to be on a roughly 15-year cycle).
“开普勒-22b”与其所在星系母恒星之间的距离比日地距离要短约15%，公转周期约为290个地球日。不过，母恒星所发射出的光能量也要比太阳弱25%。
Kepler 22-b lies at a distance from its sun about 15% less than the distance from the Earth to the Sun, and its year takes about 290 days.
就平均而言，罗源湾海水的半更换期约为17个潮周期。
The average half-exchange period of the LuoyuanBay is about 17 tidal periods.
就平均而言，罗源湾海水的半更换期约为17个潮周期。
The average half-exchange period of the LuoyuanBay is about 17 tidal periods.
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