It was systematically studied on the methods and technology of preparing,isolating chitin and chtosan by fermentation with Mucor rouxianus.

對用發(fā)酵法從魯氏毛霉中制備999免费视频、分離、提取甲殼素和殼聚糖的方法和工藝條件進(jìn)行了系統(tǒng)研究视频在线欧美视频在线看。

In combination with these experimental phenomena and theoretical analysis, the foam corrosion inhibition mechanisms in foam drilling are first put forward in the paper. They include: the adsorption of foaming agent on steel surface; the complex of foam-stabilized viscosifier with the multivalence metallic ions in formation water; isolating the steel from oxygen by foam; and fixing sands and reducing washout by foam.

結(jié)合實(shí)驗(yàn)現(xiàn)象和理論分析人人草公开操，首次總結(jié)提出泡沫鉆井中泡沫的緩蝕機(jī)理，泡沫的緩蝕性主要在于：發(fā)泡劑在鋼鐵表面的吸附国内一级黄色a片；穩(wěn)泡增粘劑能與地層水中的多價(jià)金屬離子絡(luò)合噜噜在线；泡沫對氧的隔絕亚洲综合无码区在线观看；泡沫能固定砂粒，減少?zèng)_蝕欧美嘿咻嘿咻视频免费。

These results suggest that it is feasible to produce artificial muskrat scent using cell engineering by isolating, culturing cystglanitd epithelial cell and furthmore establishing a musdrat cystgland epithelial cell line.

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Results The isolating function of nonabsorbent gauze was twice as much as that of absorbent gauze; 15sheet absorbent gauze was enough to protect burnwound and provent the oozing of humor from passing through dressing; the permeability of artificial biological dressing was 3.8 times as much as that of superficial skin graft; on wound, the stickiness of artificial biological dressing was 0.5 times as much as that of absorbent gauze.

結(jié)果 在抵抗外界污染方面，非脫脂紗布的抵抗力是脫脂紗布的2倍九九热线精品视频16首页；在隔離保護(hù)燒傷創(chuàng)面方面A级毛片毛片免费观的看久久，15層脫脂紗布已能有效保護(hù)創(chuàng)面從而防止?jié)B液外漏；人造皮膜的通透性是刃厚皮片的3.8倍国产美女真人在线；人造皮膜與創(chuàng)面的黏附力是脫脂紗布的1/299久久久国产精品免费手机版。

Methods The isolating function from environmental pollution, the protective function to bronwound, the stickiness and permeability of dressing were studed for absorbent gauze, nonabsorbent gauze, artificial biological dressing.

分別對非脫脂紗布、脫脂紗布及人造皮膜等幾種材料的通透性欧美自慰、對外界污染的屏障隔離作用男人扎爽进女人j网站视频无遮挡、對燒傷創(chuàng)面的保護(hù)作用、敷料的黏性進(jìn)行實(shí)驗(yàn)www久久99com。

According to the observation experiment at the Jiufeng station where there is smaller environment noise, the conclusions are drawn as follows.In the normal atmosphere, the observed value is about 500×10-5ms-2, which is greater than theoretical value about 30×10-5ms-2, and if in the low vacuum, the observational error about 2.3×10-5ms-2 is generated. The vacuum maintaining system in falling room can not work normally, which will yield 0.1~4.1×10-5ms-2 error to the gravimetric observation. In the case of that the measurement is in the stable geological conditions and the smaller environment noise, the action of vibration isolating spring is not obvious, but it yields greater effects on measurement accuracy.

通過在環(huán)境干擾較小的九峰站觀測實(shí)驗(yàn)日韩毛片在线中文字幕不卡，得到如下結(jié)論：在正常大氣壓狀態(tài)下所觀測到的空氣阻力影響約500×10-5ms-2，比理論估算值大近30×10-5ms-2成年人视频网站免费，若在低真空狀態(tài)測量空氣阻力也將產(chǎn)生2.3×10-5ms-2觀測誤差先锋影音官网；落體室真空度維持系統(tǒng)工作不正常，空氣阻力也將對重力觀測造成0.1~4.1×10-5ms-2的觀測誤差又粗又爽又黄的吃奶视频；在地質(zhì)條件比較穩(wěn)定高清无码乱伦a，環(huán)境震動(dòng)干擾較小的基墩上測量，隔震彈簧的作用對觀測結(jié)果影響不明顯一级黄色免费无码，但對測量精度影響較大欧美人人干。

Most importantly, our team are famous for much research on ecology, physiology,molecular phylogenesis of bats at home and abroad, we have gained much originative result in this field, and we firstly found and studied the third piscivorous bat, Myotis ricketti.We provide evidence that the species Myotis ricketti is piscivorous, and close negative relationships were found firstly within Rhinolophidae and Hipposideridae between call frequency and ear length. Some species of taxology status in rhinolophidae were studied by molecular phylogenesis; phylogenesis relationship between rhinolophidae and hipposideridae and different populations of miniopterus schreibersii were also studied; we also studied Social structure of Tylonycteris pachypusa and T. robustula and the isolating mechanisms of ecological niches.

在蝙蝠生態(tài)、生理一级做a爱黑人又粗又硬、和分子系統(tǒng)進(jìn)化領(lǐng)域完成了大量研究国内乱伦自拍视频，奠定了本項(xiàng)目組在此領(lǐng)域中的國際地位，首次在國際上證實(shí)性發(fā)現(xiàn)并系統(tǒng)研究了世界上第3種食魚蝙蝠--大足鼠耳蝠处女福利视频；首次提出菊頭蝠科蝙蝠回聲定位叫聲頻率與耳長負(fù)相關(guān)中文字幕一级黄片；利用分子系統(tǒng)學(xué)研究方法澄清菊頭蝠科內(nèi)一些種的分類地位，菊頭蝠科和蹄蝠科的關(guān)系操人黄片视频免费，以及普通長翼蝠種群間的系統(tǒng)進(jìn)化關(guān)系人人摸人人人草；系統(tǒng)地研究了扁顱蝠屬僅有兩個(gè)姐妹種的社會(huì)組織結(jié)構(gòu)和生態(tài)位分化。

This circuit faults is under the arm, bridge, no power transistor must therefore be adopted by isolating circuit or special driving power.

該電路的缺點(diǎn)是上、下橋臂的功率晶體管不共地蝌蚪窝色久，因此必須采用專門驅(qū)動(dòng)電路或采用隔離電源亚洲第5页。

This paper introduces the causes of noise generation and propagation of indoor water supply and sewerage system , probes into the corresponding solution of controlling indoor noise, mainly discusses water pump house oscillation reducing and noise isolating, selection of drain pipe material and control of velocity and pressure of water supply pipe.

介紹了建筑室內(nèi)給水排水系統(tǒng)噪聲產(chǎn)生與傳播的原因，探討了控制建筑室內(nèi)噪聲的相應(yīng)對策91精品高清国产九九九，重點(diǎn)論述了給水泵房的設(shè)置欧美性爱图视频小说、水泵機(jī)組的減振隔聲、排水管材的選擇久久影院jiujiure99、給水管道流速和壓力的控制等內(nèi)容中文字幕日韩在线。

The effects of thickness of silica isolating thermal layer on properties of multilayer pyroelectric thin film was studied.

研究了SiO〓絕熱膜厚度對復(fù)合熱釋電薄膜性能的影響。