保护物

Furthermore,it can be concluded that high temperature heat-treatment protecting coatings must contain a constituent which is active viscid membrane and a high melting point constituent which can fix viscid membrane.

同时指出，活性成膜物和对粘态膜起"钉扎"作用的高熔点物是高温热处理保护涂料的必备成分。

In a particular embodiment, a crop protection composition comprises a mononucleate solid crop protection particle coated with either wood rosin, rosin derivatives, waxes, fatty derivatives, sterols, long-chain sterol esters and sulfur.

在具体的实施例中，农作物保护组合物包括一种用木松香、松香衍生物、石蜡、脂肪衍生物、甾醇、长链甾醇酯及硫中之一加以包被的单核固体农作物保护颗粒。

Preparation of the lateral chain-4-benzyloxy-3-hydroxy butyronitrile is introduced as the substrate, the REFORMATSKY reaction is performed, then obtains the dicarbonyl ester, in the structure of which containing a chiral hydroxyl group, then performs the chiral reduction, take off the benzyl group after the protection reaction with acetonylidene,then obtains the lateral chain by oxidation.

手性侧链醛的合成：采用-4-苄氧基-3-羟基丁腈作为底物，通过REFORMATSKY反应缩合得到含有手性羟基的二羰物酯，再手性还原，丙酮叉保护后氢解脱苄，最后氧化得到侧链醛。

In this research FGA was synthesized through total ten steps such as epoxidation via H2O2, carbonyl protection, LiAlH2 reduction、carbonyl deprotection, epoxidation and ring opening with HF, oxidation, bromination and debromination et al.

设想通过对蕃麻二烯物进行H2O2环氧化、羰基保护、LiAlH4还原、羧基脱保护、溴羟环氧、HF开环、氧化、上溴脱溴等一系列反应得到FGA。

Both star copolymer precursors are hydrolyzed in the acidic conditions, then the corresponding recovered star copolymers of EO and glycidol with multi pending hydroxylmethyls are esterified with 2-bromoisobutyryl bromide to produce the ATRP macroinitiators with multi pending bromoisobutyryl groups . Then the latters initiate the polymerization of styrene to form the corresponding amphiphilic three- and four-arm star PEO-g-PS.

在阴离子共聚EPEE单体和环氧乙烷单体的过程中，通过变换引发剂体系中的醇的结构(由原来的二元醇变成多元醇，如三羟甲基丙烷和季戊四醇)，合成了星形结构的共聚物，通过水解反应脱去保护基团后，再与2-溴异丁酰溴反应，得到链的侧端挂有很多2-溴异丁酸酯基的星形大分子引发剂，通过ATRP聚合机理引发苯乙烯聚合得到PEO为主链，PS为侧链的星形一接枝共聚物。

For centuries, the resinous secretion s that Laccifer lacca beetles deposited on trees had provided a cottage industry in southern Asia, where peasants heated and filtered it to produce a varnish for coating and preserving wood products

几个世纪以来，紫胶虫积存在树上的树脂状分泌物为南亚的家庭小工业提供了原料，该地区农民把树脂分泌物加热过滤，生产一种用作涂料和保护木制品的清漆。

For centuries, the resinous secretions that Laccifer lacca beetles deposited on trees had provided a cottage industry in southern Asia, where peasants heated and filtered it to produce a varnish for coating and preserving wood products.

几个世纪以来，紫胶虫积存在树上的树脂状分泌物为南亚的家庭小工业提供了原料，该地区农民把树脂分泌物加热过滤，生产一种用作涂料和保护木制品的清漆。

For enturies , the resinous secretions that Laccifer lacca beetles deposited on trees had provided a cottage industry in southern Asia , where peasants heated and filtered it to produce a varnish for coating and preserving wood products .

几个世纪以来，紫胶虫积存在树上的树脂状分泌物为南亚的家庭小工业提供了原料，该地区农民把树脂分泌物加热过滤，生产一种用作涂料和保护木制品的清漆。

For centuries, the resinous secretions that Laccifer lacca beetles de-posited on trees had provided a cottage in-dustry in southern Asia, where peasants heated and filtered it to produce a varnish for coating and preserving wood products.

几个世纪以来，紫胶虫积存在树上的树脂状分泌物为南亚的家庭小工业提供了原料，该地区农民把树脂分泌物加热过滤，生产一种用作涂料和保护木制品的清漆。

Combining the actual present situation of lightningproof devices in flammable and explosive place,and according to the work principle of independent lightning rod,the examination technology and method of independent lightning rod in flammable and explosive place were proposed.

结合目前易燃易爆场所防雷装置的实际现状，根据独立避雷针的工作原理，提出了易燃易爆场所独立避雷针的检测技术和方法，指出独立避雷针应该计算它到被保护建筑物及其有联系的管道、电缆等金属物之间的安全距离和有效保护范围，检测接地电阻值，应具备良好的防腐、焊接效果，该检测方法为各级防雷检测机构或单位自检提供了借鉴。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。