High light efficency , concentrated light, no additional ballast, which can take place of incandesce lamp, reducing investment fees.特点:发光效率高,光线集中, 不需要附加镇流器, 可直接与白炽灯互换使用, 减少投资费用....
I didn't know Ron had that much strength of character.我当时不知道罗恩有那么坚强的个性。"Why didn't you appoint Ron twelve months ago?"—"Good question."“你为什么12个月前不任命罗恩呢？”——“问得好。”The songs were arranged by another well-known bas...
A brief review of chloroplast structure is useful before discussing these experiments.在讨论这些试验以前,对叶绿体结构作一简短的概述是有益的.The chloroplast envelope has the light yellow color of violaxanthin.叶绿体的套膜有紫黄质的淡黄色.Chloroplast ribosomes c...
He hesitated, as I did too, attracted by several callings.他不愿意, 我也是如此, 被单一的职业所吸引.She hesitated before replying.她犹豫了一下才回答。The telephone rang. Catherine hesitated, debating whether to answer it...电话响了。凯瑟琳犹豫了一下要不要去接。She hes...
众所周知，雷恩的墓志铭中写道，大教堂本身就是他的纪念碑。As Wren's epitaph famously declares, the cathedral itself is his monument.这座14世纪的大教堂变成了一堆瓦砾。The fourteenth century cathedral was reduced to a mass of rubble.大教堂在公元1136年的大火中被付之一炬。The cathe...