现在有个客户对H有兴趣,他想知道不同型号的H对应的光斑大小是否一样,不同的有效焦距对光的品质是否有影响,通常使用H时需要成组使用还是可以单独使用?
Now one of our customers has interest (is interested)in Homogenizer,he want to know(would like to konw,在信件中用want会比较生硬,不符合英语的表达习惯) whether the different spec will happen the same size facula or not（whether there would be any differents of the facula when use the H with different specification）,for example,1900.047 and 1900.046,whether the effective focal length will be influential for(be effected by) beam quality.(英语句子最好不要 用太多逗号,一个意思表达完了,就用句号结束.再开始下一句话)usually,do we need both homogenizers or single homogenizer when we use homogenizer?（When using H,we can take it lonely or we have to use it by suit?）
括号里的,是我觉得可以修改的地方.仅供参考.