例句與用法

1. But the air temperature change in chongqing karst region was complicated , not only occuring warming region , but also colding region
   但巖溶區(qū)氣溫變化很復(fù)雜，既有變暖區(qū)又存在變冷區(qū)。
2. We invest in the best people , leading - edge technologies , and world - class facilities , and passionately serve the heating , colding and hot water industry in asia and north america
   我們投資與最優(yōu)秀的人才，最前沿的技術(shù)，世界一流的設(shè)備，積極地服務(wù)于亞洲和北美洲供暖、制冷及熱水工業(yè)市場。
3. Ensure safety inusing the instrument , it is installed with unbalanced unit , gate lid , overspeed and overtemperature protection device . and colding & heating dual control temperature unit can meet the need of component blood ' s separating temperature
   設(shè)有不平衡、超速、超溫、門蓋等多種保護、確保儀器安全使用，制冷加熱雙路控溫滿足了成分血液分離溫度。
4. The optimum conditions for air electrode preparation were shown as follow : 20 % ptfe and 20 % mno2 in active layer , thickness of active layer 0 . 15 - 0 . 25mm and the ratio of active carbon to ethine black 4 : 1 ; 60 % ptfe in the gas diffusion and waterproof layer , employing na2so4 as pore - making agents , thickness 0 . 35 - 0 . 45mm , colding forming and layer sequence catlytic layer / gas diffusion and waterproof layer / current collector layout ; employing 40 meshed nickel screen as current collector and thermal treatment temperature over 200
   確定了制備空氣電極的優(yōu)化工藝條件，催化層中ptfe含量約20 ， mno _ 2的最佳含量約為20 ，催化層中活性炭和乙炔黑的比例為4 ： 1 (質(zhì)量比) ，厚度在0 . 15 - 0 . 25mm之間。防水透氣層中ptfe的含量約為60 ，以無水硫酸鈉作為造孔劑，厚度一般為0 . 35 - 0 . 45mm 。電極各層采用催化層/防水透氣層/集流體的排布方式，冷壓成型，熱處理對空氣電極的性能影響較大，熱處理溫度不低于200 。