天气预报 > 其他 > 手电变焦的好还是不变焦的好
手电变焦的好还是不变焦的好
更新时间: 2020-07-02 00:00:00  

不变焦的好,原因如下:

一般来说,变焦的手电筒不如不变焦的手电筒可靠和耐用。变焦手电筒绝大多数是用透镜变焦,透镜手电筒的弱点,就是要么只有中间的聚焦光柱,要么只有泛光的范围性照射,而光杯型的手电筒则是中间有聚焦的加强光柱,周围有辅助的范围性泛光,比较符合人的视力习惯,即有重点,有范围。这样看得才清楚,视野才清晰。而且,变焦手电筒因为大多数采用的是伸缩调焦方式,或者旋转方式,导致防水和耐撞击方面有先天的不足。

关键词: 手电 还是

手电变焦的好还是不变焦的好相关经验

天气预报

最新推荐

页面:/news/view-3209526/ | 耗时:0.5878 s | 内存:2.11 MB | 查询:4 | 缓存读取:3 写入:0 | 加载文件:25
select * from tbl_Articles WHERE ArticleID=3209526 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=3209526 LIMIT 0,1
select * from tbl_Articles_sphinx where id=3209526 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(1082203,1101707,1081881,1093379,1093479,1089522,1072647,1094083,1085888,1101525,1024969,1074306,1063551,1062756,1046963,1044442,1088906,1091950,3267043,1046512,1084259,2972149,1064667,1066090,1067049,1068774,1117914,1053404,1085616,1089612) ORDER BY field (ArticleID,1082203,1101707,1081881,1093379,1093479,1089522,1072647,1094083,1085888,1101525,1024969,1074306,1063551,1062756,1046963,1044442,1088906,1091950,3267043,1046512,1084259,2972149,1064667,1066090,1067049,1068774,1117914,1053404,1085616,1089612)