紫胶恰巧还是一种有效的绝缘物。
Shellac also happened to be an effective electrical insulator.
提出了新的紫胶虫死亡率计算公式。
LP和紫胶再生产的巨大改善。
紫胶色素是应用最广泛天然色素之一。
The shellac pigment is one of the most extensive natural pigments.
紫胶蚧分布与不同方向枝条之间无关。
The distribution of lac insects on branches had no relation with orientation.
介绍了漂白胶的美国市场及广东紫胶生产的概况。
The situations of bleached lac in American market and the outlines of lac production in Guangdong province are introduced.
紫胶虫用粘性排泄物作为停留在它所生存的树上的手段。
The Kerria lacca uses the sticky excretion as a means to stick to the trees on which it lives.
贝克兰独具慧眼，他迫切希望找到紫胶的合成替代物。
Baekeland recognized a killer ap when he saw one. If only he could come up with a synthetic substitute for shellac.
而科级水平的聚类反映出人工紫胶林和天然紫胶林更接近。
While at the family level, plantation forest was close to natural forest.
制备和表征了在食品及制药业中广泛使用的天然低氯漂白紫胶。
The bleached natural shellac product with low chlorine content was prepared by means of catalytic hydrogenation of the bleached shellac in the presence of Ni-Fe binary-metal catalyst and hydrogen.
讨论了紫胶树脂的一般性质、特性，及其在加工光学抛光片中的应用。
The natural properties and characteristics of shellac resin and its application in fabricating optical polishing pills are descibed.
研究了紫胶蚧觅食行为特点和紫胶蚧觅食时对寄主植物枝条的选择行为。
The characteristics of lac insect foraging behavior and its preference to host branch in foraging were studied.
紫胶硬树脂改性酚醛树脂和普通酚醛酚醛树脂的红外光谱图谱基本一致；
The IR analysis discovers the component of the modification of PF resin with hard resin and general PF resin is almost alike.
紫胶，虫胶由紫胶虫分泌的沉积于树上的树脂分泌物，用于制造虫胶清漆。
A resinous secretion of the lac insect deposited on trees and used in making shellac.
介绍了天然可食紫胶色素的组成、特性及提取技术等方面的研究进展情况。
This review introduced researching progresses of Lac Dye's composition, characteristic and extracted technology.
紫胶硬树脂由软树脂多聚而成，该聚合过程以树脂的羟基参与反应为特征。
The hard resin was formed by polymerization of the soft resin in the presence of hydroxyl groups.
介绍了用离心沉降对紫胶脱蜡和四氯化碳萃取精制紫胶蜡的研究过程和结果。
The research is made on dewaxing shellac by centrifugal subside and refining shellac-wax by Carbon tetrachloride extraction.
贝克兰-许多人称之为“贝克兰博士”-首先难以处理的事是紫胶价格的上涨。
The initial tease for Baekeland---- Doc Baekeland " to many-was the rising cost of shellac."
本文分析了我国紫胶主产区的气候条件以及新产区紫胶虫引种驯化的研究概况。
This paper deals with climatic conditions in original lac-producing areas and lac insect introduction and cultivation in new places.
结果证明国产紫胶树脂具有代表性的分子构成及分子结构与印度紫胶树脂相同。
The experimental results showed that the molecular composition and structure of domestic lac resin was similar to that of the...
本文讨论了紫胶树脂结合剂的一般性质和特性，及其在加工光学抛光片中的应用。
The natural properties and characteristics of shellac resin and its application in producing optical polishing pills are described.
结果提示，紫胶林-农田复合生态系统具有区域内土地利用方式多样化的特点；
These results suggest that the land-use in lac-plantation-farmland ecosystem is different and diverse;
在直立枝条上，紫胶蚧呈环状带分布，在多数倾斜枝条上，紫胶蚧分布在背阴面。
On erect branches, lac insects distributed around the branch, but on most decline branches, lac insects only settled on shaded parts.
试验结果表明，混合溶剂较单一溶剂对紫胶的溶解性能好，胶液粘度低，漆膜干燥快。
It has shown that mixed solvent is more effective for the shellac than single solvent resulting in a low viscous solution and fast dry film.
唯一的前置放大器提供真实地乙烯基LP's，EP's和紫胶纪录的准确再生产。
The only preamplifier providing truly accurate reproduction of vinyl LP's, EP's and Shellac records.
采用溶剂分离法分离紫胶片得到的硬树脂含量为65.1%，软树脂含量为28.2%。
In the lac resin, the content of hard resin is 65.1%, the content of soft resin is 28.2%.
随着紫胶用量的增加，膜的溶胀倍数、水蒸气透过系数先降低后变化不大，而拉伸强度上升；
With the increase of lac dosage, solvent swell and water vapor permeability decreased first followed by insignificant change, while tensile strength increased.
研究了对紫胶改性酚醛树脂胶粘剂的固化时间、接胶合板的粘接强度和甲醛释放量进行了测定。
The research of phenol-formaldehyde (PF) resin modified with lac can be expected to widen the application of the lac and enlarge the utilization of the renewable resource.
研究了对紫胶改性酚醛树脂胶粘剂的固化时间、接胶合板的粘接强度和甲醛释放量进行了测定。
The research of phenol-formaldehyde (PF) resin modified with lac can be expected to widen the application of the lac and enlarge the utilization of the renewable resource.
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