bitter principle是什么意思

网络释义

用法例句

Pine resin acids are important renewable natural resources.

松香树脂酸是一种重要的天然可再生资源,具有独特的化学结构和多个手性中心,表现出广泛的生物活性,在医药及农药等领域有着重要的用途。

Rosin is an importantnatural resource of China, pine resin acids are the main components of rosin, they have beenattracted great interest for their special chemical structures and wide range of biologicalactivities.

本文以松香树脂酸或其衍生物为原料，通过缩合、加成及霍夫曼降解等各种化学手段，采用活性基团拼接原理，合成了含松香树脂酸三环二萜结构的Schiff碱、金属配合物、氨基膦酸酯、酰胺、异氰酸酯和酰基脲等六类共48个化合物，其中含氟脱氢枞基Schiff碱和酰胺、氨基膦酸酯和酰基脲类共30个化合物为首次合成。

Research process and application of abietic-type resin acids derivatives

枞酸型松香树脂酸衍生物及其应用研究进展

Synthesis、Characterization and Biological Activities of Pine Resin Acids Derivatives;

松香树脂酸衍生物的合成、表征及生物活性研究

Study on PTC process to synthesize allyl resinate

相转移催化法合成松香树脂酸烯丙酯工艺

Composition of vinyl ester of rosin and structures of the components were studied by GLC and various spectra.

研究了国产特级松香树脂酸乙烯酯的组成与各组分的分子结构。

Study on Thermal Variation Rule of Pimaric-type Acids in Rosin

松香中海松酸型树脂酸热作用变化规律的研究

Study on thermal reactions of abietic-type acids in rosin

松香中枞酸型树脂酸热作用变化规律的研究

Study on Composition Variation Relationships of Pimaric-type Resin Acids in Rosin at Acidic Conditions

松香中海松酸型树脂酸在酸作用下的组成变化规律

Study on Hot-Melt Road Marking Paint Using Modified Rosin-Alkyd Resin;

热熔型改性松香—醇酸树脂路标涂料的研制

Rosin Ester Resin Modified Polyisocyanate Prepolymer with Low Free TDI Content

松香酯树脂改性低游离TDI多异氰酸酯预聚物

Study on the synthesis and property of the prepolymer of acrylic acid rosin and 1,4-butanediol diglycidyl ether

丙烯酸松香环氧树脂预聚体的合成与性能研究

rosin-maleic ester

顺丁烯二酸－松香脂

Tracking Analysis of Changes in Resin Acid Composition During Catalytic Hydrogenation of Rosin

松香催化加氢过程中树脂酸组成变化的跟踪分析

Rosin modified alkyd resin prepared by soybean oilstocks had reliable performance and stable quality.

以大豆油脚为原料，研制的松香改性醇酸树脂，性能可靠、质量稳定。

Synthesis of Brominating Acrylic Rosin Epoxy Resin and Flame Retardation of the Curing Product

溴化丙烯酸松香环氧树脂的合成及固化物的阻燃性

Catalytic Isomerization of Slash Pine Rosin by Strong Acid Type Cation Exchange Resin Cooperated with Microwave

微波协同强酸性阳离子交换树脂催化湿地松香异构化反应

Employing C_5 Petroleum Resin as Rosin Extender of Cationic Rosin Size

C_5石油树脂做阳离子分散松香胶的松香补充剂

Synthesis of Cationic Dispersed Rosin Size with C_9 Petroleum Resin

石油树脂用于合成阳离子分散松香胶

Effects of Rosin Resin on Properties of SnAgCu Solder Paste

松香树脂对SnAgCu焊膏性能的影响