The studies segmented polyester polyurethaneurea elastomers based on 4,4'-diphenylmethane diisocyanate, ethylene diamine and polybutylene adipate (M. W. 1975 and M. W. 1228) were studied by means of IR spectrascopy.

用紅外光譜法對基於4影音先锋在线资源网看，4'-二苯基甲烷二異氰酸酯欧洲无码熟妇、乙二胺和聚己二酸丁二醇酯（分子量分別為1975和1228）的嵌段聚脲氨酯彈性體進行了研究。

Hydrogen bonding in hard segment domains of segmented polyester polyurethaneurea based on 4,4'-diphenylmethane diisocyanate, ethylene diamine and polybutylene adipate(M. W. 1975 and M. W. 1228) was studied by means of IR spectroscopy.

用紅外光譜法對基於4亚洲一级视频，4'-二苯基甲烷二異氰酸酯欧美视频观看、乙二胺和聚己二酸丁二醇酯（分子量分別為1975和1228）的兩系列嵌段聚酯型聚脲氨酯硬段微區(qū)中的氫鍵化進行了研究。

The experimental reseach of gold leaching of hot-press acid leaching residues by ammmoniacal cyanide process and the effects of various operation condition on gold extraction have been investigated in this paper.

對氨氰法浸取含銅熱壓酸浸渣進行了工藝試驗研究91老女露脸在线观看，詳細地考查了各操作條件對金銀浸出率的影響在线激情性爱网。

Methods Isothiocyanic acid base phenyl ester pre-column derivatization was used for the determination of three kinds of amino acids contents in the glu-ala-glycine chewable lablet by high performance liquid chromatography,the chromatography condition was inertsil ODS-3V4.6×250mm,5μm

方法谷丙甘氨酸咀嚼片中3種氨基酸含量測定采用異硫氰酸基苯酯柱前衍生化高效液相色譜法。色譜條件：色譜柱為Inertsil ODS-3V4.6mm×250mm变态一区，5μm

Segmented polyester polyurethaneurea based n 4, 4'-disphenylmethane diisocyanate, ethylene diamine and polybutylene adipate elastomers and their deuterated polymers were studied by means of IR spectroscopy.

用紅外光譜法對基於4国产黄色精品网站在线观看，4'-二苯基甲烷二異氰酸酯、乙二胺和聚己二酸丁二醇酯的嵌段聚酯型聚脲氨酯彈性體及其氘化產(chǎn)物進行了研究色97综合视频在线观看视频。

cyanamide process：氰氨法

cyanamide 氨基氰 | cyanamide process 氰氨法 | cyanate 氰酸鹽

cyanate：氰酸鹽 氰酸酯

cyanamideprocess氰氨法 | cyanate氰酸鹽 氰酸酯 | cyanation氰化作用

diol：二醇

聚氨甲基酸乙酯或氨基甲酸乙酯(URETHANE)它的主桿是二醇(DIOL). 二醇和二異氰酸(DIISOCYNATE)產(chǎn)生作用形成氨基甲酸乙酯鍵合. 但最常用的是(TDI)異氰酸甲基. 當二異氰酸和二醇在一個過程中就能形成固體橡膠. 這個過程稱為"一段法"(ONE SHOT).

cyanamide process：氰氨法

cyanamide ==> 氨基氰 | cyanamide process ==> 氰氨法 | cyanate ==> 氰酸鹽