查询词典 ir

The structure and characteristics of the polymer/nanometre alumina composite fibre had been studied by XRD, TG, IR and SEM.

本工作采用XRD，IR，SEM等手段对聚合物/纳米氧化铝复合纤维样品结构和物性进行了表征。

The structure and characteristics of the polymer/nanometre alumina composite fibre had been studied byXRD, TG, IR and SEM.

本工作采用XRD，IR，SEM等手段对聚合物/纳米氧化铝复合纤维样品结构和物性进行了表征。

We have synthesized a series of 4,4′ perfluoro-alkylated bipyridine ligands[4,4′- bis(RfCH2OCH2)-2,2′-bipyridine , Rf=HC4F8(1a), HC8F16(1b), C3F7(1c) and C10F21 (1d)] by nucleophilic substitution reactions. The reaction of fluorinated alkoxide on 4,4′-bis-2,2′-bipyridine results in the systheses of these four fluorinated ligands. These reactions are high yieldings and purification is easy. The structures are analyzed by GC-MASS、NMR、FT-IR etc.

中文摘要我们已合成出一系列在联吡啶的4，4′位置有两个氟化烷基侧链的联吡啶配位基[4，4′-bis(RfCH2OCH2)-2，2′-bipyridine ， Rf=HC4F8(1a)， HC8F16(1b)， C3F7(1c)及C10F21(1d)]，经由亲核取代反应，由4，4′-bis-2，2′-bipyridine反应而得，并具有不错的产率，其纯化也简易可行，所合成之产物并可用GC-MASS、NMR、FT-IR鉴定其化学结构。

Based on time-frequency analysis, a novel method to design the waveforms of IR-UWB signals is proposed.

在信号接收上，IR-UWB面临的主要问题是简单有效的窄脉冲信号接收和快速的精确同步技术。

Meanwhile,a large number of SP-IR nerve fibres showing a net-like appearance were found existing in the tunicae adven-titia vasorum in the distal ends of SMA.

在SMA远端外膜上可见大量的SP-IR阳性神经纤维，相互交错，呈网状结构。

Maritime patrol aircraft fitted with surface search radar, electronic warfare suite, day/IR cameras, and sonobuoys

Y-8MPA 首次飞行1984 海上巡逻机安装水面搜索雷达、电子战组件、昼/IR照相机和声纳浮标。

Mn-Zn ferrite nanocrystalline was prepared by solgel auto-combustion process,and the technics was analyzed by means of TG-DTA, FT-IR and XRD.

用溶胶-凝胶自燃烧法制备了 Mn-Zn铁氧体纳米晶体，用TG-DTA，FT-IR和XRD等3种分析方法研究了其制备工艺。

K-M composite ceramic membrane tube supported TiO〓 membranes have been prepared by solgel technique and characterized by mercury intrusion, SEM and IR techniques.

采用溶胶—凝胶技术在K-M支承体上制备了负载型TiO〓膜，利用压汞、SEM、IR等实验手段对其进行了表征，考察了溶胶浓度、粘度、浸涂时间和次数等条件对成膜过程和成膜性质的影响。

Structure of superplasticizer was characterized by IR and effects of the product on fluidity of cement paste and water reduction for concrete were investigated.

利用IR表征了其结构，并考察了产品对水泥净浆流动度和混凝土减水率的影响。

The final products were characterized by HNMR and IR ,which shows that the resultants are the objective products.

通过IR和HNMR图谱分析证明合成物质即为目标产物。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。