查询词典 ft-lb

Finally, this paper compared the effect of alkali scouring with that of alkaline pectinase scouring.

利用FT-IR ATR法对比分析了碱精练和碱性果胶酶精练效果。

The photoisomerization reaction of norbornadiene to form quadricyclane was carried out in a photoreactor in order to study the effects of the structure of the catalysts on their catalytic activity.

制备了Zn掺杂TiO_2、La掺杂ZnO/TiO_2、Ti-MCM-41和MCM-TiO_2催化剂，利用XRD、BET、TEM、XPS、DR UV-vis、FT-IR、N2吸附-脱附等技术对催化剂进行了表征，在光反应器中进行了降冰片二烯异构化生成四环烷的反应，研究了制备方法对催化剂的结构和性能的影响规律。

A series of novel polys: poly, poly and their copolymer poly were synthesized at high temperature by nucleophilic polycondensation of bisphenol 4 (3 phenyl 4 hydroxyphenyl) 2,3 phthalazin 1 one with activated difluorodiphenylketone, dichlorodiphenylsulfone and both together.

将苯基取代类双酚化合物 4-(3 -苯基-4-羟基苯基)-2 ，3 -二氮杂萘-1 -酮与活性双卤单体如 4，4 -二氟二苯酮、4，4 -二氯二苯砜进行高温缩聚反应，合成了高分子量的新型苯基取代杂萘联苯型聚芳醚材料；用1 H NMR、FT-IR表征了类双酚单体及聚合物的结构。

The structure of PIK-Ⅱ was characterized by FT-IR and 1H NMR.

由红外和核磁氢谱等表征了PIK-Ⅱ结构，表征结果与目标结构相吻合。

The effects of ethanol washing and water washing on structure, morphology and texture properties of pseudoboehmite-calcined γ-Al2O3 were comparatively studied with XRD, FT-IR,TG-DSC,TEM,BET and mercury porosimeter.

采用H2O2沉淀铝酸钠溶液和乙醇分散并洗涤沉淀相结合的方式成功地制备出了大孔容纳米γ-Al2O3纤维。

In Chapter 2, by using M-matrix theory, some analysis techniques and constructing suitable Lyapunov functionals, we investigate the convergence of solutions and the existence and uniqueness of periodic solution for system:where ft and g, are the propagational signal functions defined onR.

在第二章中，讨论一类推广的具变时滞和变系数的双向联想记忆神经网络模型的渐近状态。

In Chapter 2, by using M-matrix theory, some analysis techniques and constructing suitable Lyapunov functionals, we investigate the convergence of solutions and the existence and uniqueness of periodic solution for system:where ft and g, are the propagational signal functions defined onR.

在第二章中，讨论一类推广的具变时滞和变系数的双向联想记忆神经网络模型的渐近状态。这里，信号传输函数f_i，g_i(i=1，2，…，n，j=1，2，…，m)是R→R上的连续函数，且满足Lipschitz条件。

Methyl 6-acylnaphthalene from 2-methylnaphthalene was synthesized via acylation using acetic anhydride and propionyl chloride as the acylating agents with catalyst aluminum trichloride in homogeneous liquid phase system.

为制备重要的化合物2-甲基6-酰基萘，提高酰化产物的收率和纯度，以2-甲基萘为原料，分别研究了乙酸酐和丙酰氯为酰化剂时的酰化反应，对酰化反应的产物进行了GC、FT-IR和GC-MS表征；对酰化反应的影响因素进行了研究。

Propoxy propyl cellulose was synthesized by esterification with hydroxypropyl cellulose as raw material. The chemical structure of PPC was characterized by Fl' IR.

以羟丙基纤维素为原料，通过酯化反应合成了丙酰氧丙基纤维素，通过FT-IR表征其化学结构。

Collagen-chitosan-polyvinyl pyrrolidone blend film s were prepared successfully by solution method,and characterized by FT-IR,X-ray diffraction and optical transmittance.

利用溶液共混法成功制备了新型生物膜材料——胶原蛋白—壳聚糖—聚乙烯吡咯烷酮共混膜，通过红外光谱、X-射线衍射和透光率测试表征了共混膜的结构，同时测定了共混膜的力学性能，考察了溶液pH值对共混膜吸水率的影响。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。