In order to maintain a good greenhouse plants illumination conditions, the annual Botanical Garden to clean glass work.

為了保持溫室植物有良好的光照條件老熟妇喷水一区二区三区，植物園要每年進(jìn)行清潔玻璃的工作。

XT-195 Unsaturated polyester resin is a translucent resin, used for the E-glass fiber cloth or blanket, a high transmittance of the glass sheet steel for greenhouse lighting, cement conservation, solar water heaters, and has a good weatherability.

XT-195不飽和聚酯樹脂是一種透光樹脂日韩性色一级A片，選用適宜的無堿玻璃布或氈欧美精品日韩国产一区原创色，可以制得高透光率的玻璃鋼板材，用于溫室采光在线小视频日韩、水泥養(yǎng)護(hù)AV免费播放网址、太陽能熱水器等，并具有良好的耐候性三级片亚洲网站。

This paper studied a new type greenhouse with double skins inflated roof and double layer glass wall suit for Chinese high cold areas. According to production arrangement, by controlled local piping ventilation, When the air velocity was 1 0 m/s near outlets, the temperature in tunnels of tulip seedbeds in greenhouse can be maintained between 2～8℃.

簡要分析了適用于我國高寒地區(qū)氣候特點(diǎn)的現(xiàn)代化雙層充氣膜—雙層玻璃溫室的設(shè)計(jì)特點(diǎn)国产a片一级毛片网站，針對溫室冬季花卉生產(chǎn)工藝上的具體要求，通過管道局部送風(fēng)控制室內(nèi)小氣候欧美性爱亚洲有码，當(dāng)風(fēng)速為1.0m ／s 時(shí)国产美女一级A片操逼视频，郁金香苗床內(nèi)氣溫可維持在2～8 ℃之間，保證了郁金香促成栽培所需要的溫度国产福利在线免费。