This approach leads to large, heavy and complex optical assemblies and a higher manufacturing cost for specialized optics.
这种方法导致了光学组件变得更大、更重而且趋于复杂化，光学制造成本较高。
Built on top of of a floating foundation of heavy concrete caisson, the Citadel will house 60 luxury apartments, a car park, a floating road to access the complex as well as boat docks.
‘城堡’将建造在一个由重型混凝土沉井承担的浮动地基上，拥有60套豪华公寓、一个停车场，还有一条进出大楼及游船码头的浮动道路。
If you need to perform highly complex queries and very heavy analytical processing, plain SQL over shredded data can provide better performance.
如果需要执行高度复杂的查询和非常多的分析处理，在分解的数据上执行纯s QL可以提供更好的性能。
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