Can be used in Zone 20 zone 21 and Zone 22 dangerous places. Can be used in explosive or flammable dust atmosphere.
粉尘防爆照明应急两用灯，21区，22区危险场所。 含有爆炸性或可燃性粉尘环境。
Where, following an abnormal condition, the removal of dust accumulations or layers cannot be assured, then the area is to be classified zone 21.
如果不能保证排除可燃性粉尘堆积或粉尘层时，则应划分为21区。
Spurs have taken 33 points from 21 matches since Harry Redknapp took charge, a run which has seen them pull away from the relegation zone after their poor start to the campaign.
自从雷德克纳普接手球队，热刺已经在21场比赛中拿到了33分，看起来他们已经从赛季初的糟糕开局中摆脱并逃离了降级区。
Meanwhile, the unemployment rate in the euro zone crept up to 10%. Youth unemployment in the 16-country block was 21%.
同时，欧元区的失业率蹿升至10%，欧盟16国的青年失业率达到21%。
The United States airspace is divided into 21 zones (centers), and each zone is divided into sectors.
美国的空域分为21个区域（管制中心），每一个区域都划分为多个扇区。
The United States airspace is divided into 21 zones ( centers ) , and each zone is divided into sectors.
美国的空域分为21个区域（管制中心），每一个区域都划分为多个扇区。
The reversibility of infarct myocardial dysfunction zone was evaluated by low-dose dobutamine stress echocardiography(LDDSE) in 21 patients with myocardial infarction.
应用低剂量多巴酚丁胺负荷超声心动图（LDDSE）试验对21例心肌梗塞患者梗塞区心肌功能障碍的可逆性进行研究。
Our reporters found Long he, a French student in the Longshen Company in the Xiangzhou Science and Technology Industrial Zone. He is an energetic 21 year old guy.
在香洲科技工业区里的龙神公司，我们的记者找到了在这里实习的法国学生龙河，一位充满朝气的21岁小伙。
Since 21 centuries, the inner industry transfer in the western strait economic zone gradually became active and formed a special mode accepting the industry transfer.
进入21世纪以来，海峡西岸经济区内部的产业转移日趋活跃，形成了独特的承接产业转移的模式。
The values based on the three stimulation value were adopted for the colour selection and tooth colour matches from nine zone colors with 21 point smoothly transitional calculation.
采用一种基于三刺激值的相对选色方法及2 1点平滑牙色过渡算法的九分法的牙齿颜色匹配；
The values based on the three stimulation value were adopted for the colour selection and tooth colour matches from nine zone colors with 21 point smoothly transitional calculation.
采用一种基于三刺激值的相对选色方法及2 1点平滑牙色过渡算法的九分法的牙齿颜色匹配；
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