On mountainous sites, grade Ⅰ or Ⅱ stands including land below the crown of the secondary broadleaf forest and the Chinese-fir plantation or east-facing, shady dry land could be considered for the plantation. The transmittance of crown in the areas should be 55%~60%. One-year-old high quality seedlings above 25 cm tall and 0.25 cm in diameter near the ground-level should be used. For high-yield, field cultivation, shading facility should be considered and seedlings of taller than 15 cm and greater than 0.15 cm in diameter near the ground should be applied. The appropriate density and sunlight transmittance ought to be 30 cm×30 cm and 50%, respectively.

結(jié)果表明无码毛片视频一区二区99，利用山地種植，選擇透光率為55%~60%的Ⅰ欧美干逼、Ⅱ類立地的殘次闊葉林和杉木林冠下国产色欲电影在线观看视频，或地形隱蔽、東向的山垅旱地国产精品色哟网，選用苗高25 cm以上a级片a级片a片a级片、地徑0.25 cm以上的1年生優(yōu)質(zhì)苗木造林；利用農(nóng)田進(jìn)行庇蔭設(shè)施高產(chǎn)栽培国产91视频网站，應(yīng)選用苗高在15 cm以上婷婷色吧A√、地徑0.15 cm以上規(guī)格的苗木栽植，適宜栽植密度為30 cm×30 cm国产av中文高清在，遮陽透光率在50%左右国产高中不带套视频在线观看。

The relationship between the light transmission and the porous structure of the membrane can be explained by the geometrical optics principles.

設(shè)計了透光率測試裝置，以光在不均勻介質(zhì)中發(fā)生漫反射和漫折射的原理亚洲九月小视频，解釋膜內(nèi)部多孔結(jié)構(gòu)與透光率的關(guān)系在线无码午夜福利高潮视频。

The grafted and ungrafted carbon black are characterized by FTIR spectrum and TEM. Deposition experiments show that the unmodified carbon black in suspension sedimentates in 5 min. The ultraviolet transmittance of p-PS carbon black/water suspension increases from 1.5% to 11.4% and that of carbon black grafted with 13% SPF increases from 43.4% to 64.8% after 15 days' deposition.

通過FTIR偷窥50个美女撒尿粉嫩、TEM等手段對p-PS和SPF改性炭黑進(jìn)行了表征一级做a爱过程免费视；未經(jīng)改性的炭黑5min即會完全沉降；p-PS改性炭黑一区黄色在线免费观看，在自然沉降15d后大黑屄网，分散液透光率從1.5%增加到11.4%；接枝率為13%的SPF改性炭黑在线毛片.com，分散液透光率從43.4%變?yōu)?5.8%你懂的视频网址。

Results: The light transmittance of Artglass decreased logarithmically with the increase of the thickness (R2=0.9834 in the group of samples without opaque and R2=0.9390 in those with opaque).

結(jié)果：Artglass樹脂的透光率隨厚度增加呈對數(shù)下降，在相同厚度下男生擦进女人下身全视频国产，遮色組比無遮色組透光率明顯降低精品高清无码在线观看。

The disease severity decreased as light transmittance ratio of the canopy at heading increased. The LTR, Tav and RH explained 80.2% of variation in disease severity.

紋枯病病情指數(shù)隨著抽穗期群體透光率的提高而下降，由日平均溫度18禁福利免费网站无遮掩、相對濕度和抽穗期群體透光率可以解釋紋枯病病情指數(shù)變異的80.2%理论精品视频在线观看。

Substrate concentration, and enzyme content of 4 to 6 u/g chitosan, respectively. Enzymatic reaction could be stopped by adjusting pH to 8. 0 with 2. 0mol/L NaOH, when transmittancy reached 78% in wave length of 600nm.

采用NaOH溶液調(diào)pH至8左右，在波長600nm下測其透光率先锋影音最新AV看片资源，當(dāng)透光率達(dá)到78％左右久久九九re精品国产三级，即可終止酶解反應(yīng)，該方法可方便、快速和準(zhǔn)確地控制酶解反應(yīng)欧美黄视频精品A片。

No differences in transparency, pH change or quanty of meperidine were observed either in accelerated tests at 40℃ or storage test for six months. Nevertheless, a decrease in pH value without significant changes of transparency and meperidine content was observed in accelerated tests at 60℃ after storage for 15 weeks. The pH value and meperidine content decrease significantly in both types of ampules when subjected to accelerated tests at 80℃ for 15 weeks.

結(jié)果顯示鹽酸配西汀注射液在兩種安瓿中經(jīng)40℃加速試驗(yàn)與儲存六個月樣品之外觀欧美,曰韩,国产馆在线视频、透光率、pH值和含量均未呈明顯變化免费在线看片国产；加速試驗(yàn)60℃者於15周開始pH值有明顯下降少妇精品无码专区视频仙踪林，此外，外觀黄色91大全、透光率與含量均未呈明顯變化操B网址；而加速試驗(yàn)80℃者於15周之外觀與透光率雖未呈明顯變化，但其含量與pH值均明顯下降国产在线三区，表示有分解反應(yīng)發(fā)生色区一区二区在线观看。

The results showed:(1)Nitrogen addition changed the soil physical and chemical properties, enhancing the content of NO3—- N available resources in the soil, increasing the plants height and cover, reducing the vegetation light penetration. With increasing of N addition, both the species richness and the diversity decrease sharply (P 0.001).(2)N addition increased the aboveground biomass significantly (P 0.05). With increasing of N addition, the aboveground biomass increased first then decreased, and the grasses biomass increased while the forbs and legumes biomass decreased.(3)There was a significant linear positive relationship between species richness and vegetation light penetration (P 0.05), and also between aboveground biomass and soil NO3—- N content (P 0.05). The relationship between aboveground biomass and species richness was negative upon enhanced N supply.

結(jié)果表明：（1）氮素添加提高了土壤中NO3—- N等可利用資源的含量，增加了植物群落植被的蓋度玖玖资源网日本在线视频，減小了植被的透光率国产国语一级免费黄色，隨著施氮量的增加群落中物種豐富度顯著降低（P 0.001）；（2）氮素添加顯著改變了植物群落地上生產(chǎn)力（P 0.05）国产一级爱c在线大片，隨著施氮量的增加地上生產(chǎn)力呈現(xiàn)先增加后降低的變化趨勢国产大乳一级在线观看，各功能群中禾草生物量顯著增加，而雜草和豆科生物量隨施氮量增加逐漸減少影音先锋最新av资源；（3）物種多樣性與植被透光率呈線性正相關(guān)（P 0.05）欧美天天；地上生產(chǎn)力與土壤NO3—- N含量呈線性正相關(guān)（P 0.05）；隨著施氮量的增加物種豐富度與生產(chǎn)力之間呈負(fù)相關(guān)關(guān)系在线欧美h。

The maximal transmission is 42% in the visible light range, and it is up to 74% in the near infrared range.

該透明陶瓷在可見光區(qū)的最大透光率達(dá)到42%中文字幕强奸乱伦国产，在近紅外光區(qū)的最大透光率達(dá)到74%。

The results showed that cover materials had the effects of sun-shading, cooling, and keeping moisture to some degree, and the cooling effect was related to transmittance. The lower the light transmission rate, the better the cooling effect.

結(jié)果表明：遮陽材料在不同程度上都有一定的遮光降溫保濕作用国产色色一级免费视频，且其降溫效果與材料的透光率有很大的關(guān)系高清福利免费久久久久，透光率越低，降溫效果越好wwwwⅹⅹxx，保濕性越高国产射射爽爽。