In actual practice a brighter image is obtained by using a broad, rather than a point, source along with a substage condenser.
在实际工作中，不是用点光源而是用一个扩展光源加一个台下聚光镜以得到一个较亮的象。
Starting with the heat balance of steam turbine unit and condenser, the study is carried out on changed direction of exhaust steam point after turbine performance aging.
从汽轮机组和凝汽器的热平衡入手，对汽轮机性能老化后低压缸排汽点变动方向进行了研究。
From the cigarette factory in the central air-conditioning energy saving point of view, in the heat exchanger, condenser, cooling water system for water treat...
从烟厂中央空调节能角度出发，在换热器、冷凝器、循环冷却水系统等几方面进行水质处理，从而达到节能效果。
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