Light hour

The optimum temperature was 20 ℃ and the best light hour was 10 h / d.

最适培养温度为20℃，最佳光照时间为10h/d。

12 hour light and 12 hour dark were benefit for the callus induction .

光照条件为12h/d时有利于愈伤组织的诱导；

Light our darkest hour .

照亮我们最黑暗的时刻。

Turnes off a light for one hour , in the beautiful darkness instantaneous demonstrated that they to conserve energy reduce the row , to deal with the global climate change silent support .

关灯一小时，在美丽的黑暗瞬间中展示它们对节能减排、应对全球气候变化无声的支持。

At seven day-age , the broilers were changed from continous lighting schedule ( 23 hours light , 1 hour dark ) to intermittent lighting schdule ( 1 hour light , 3 hours dark ) .

在7日龄时，肉用仔鸡由接近全日制光照（23h光照，1h黑暗）改变为1h光照，3h黑暗的短周期间歇光照。

I 'll be your guiding light in your darkest hour .

我将是你最黑暗时刻的启明星。

In the month leading up to the holiday , it features a light show every half hour after sundown .

12月份圣诞节到来之际，这棵圣诞树会在日落后每半个小时上演一场灯光秀。

The results showed that the mildewing rate of the seeds was the lowest when the seeds were radiated by ultraviolet light for half a hour and preserved as long as 30 d.

结果表明，以普通紫外线照射30min，储藏30d，霉变率为11.21%最低。