natural fuel break

Study on extraction and stability of natural sunscreen constituents;

几种天然防晒成分的提取及稳定性研究

This paper expounds mineral composition,physical and chemical characteristics,activity and its evaluation of natural volcanic ash which is used as concrete admixture.

论述了天然火山灰用作混凝土掺合料的矿物组成、物化性能;火山灰活性及其评定。

Study on the effects of natural preservatives on control of spoilage organisms in pickled radish;

天然防腐剂对萝卜干腐败微生物的控制研究

The results showed that the optimal technical parameter of extracting natural preservatives from pepper by edible alcohol are that ratio of solid to liquid is 1∶25,temperature of extract is 70℃ and time of extract is 20h.

研究了胡椒中天然防腐剂的提取方法和抑菌作用,结果表明,用食用乙醇提取胡椒中防腐物质的最佳提取工艺参数为:固液比1∶25、浸提温度70℃、浸提时间为20h。

With the request of people for health,people have paid attention to them because of natural preservatives characteristic.

随着人们对健康的要求,天然防腐剂以其独特的优点已经受到了人们的关注。

The contrast experiments of bacteriostasis with sodium benzoate and sorbic acid as chemical antiseptics,and natural antiseptics extracted from natural tea were done to study the varieties of fungi that cause bean products spoiled.

研究了引起豆制品腐败变质的真菌种类 ,并选用了化学防腐剂苯甲酸钠、山梨酸及从天然茶叶中提取的防腐剂做对比试验 ,证明了该天然防腐剂的效果与苯甲酸钠和山梨酸相当 ,提出了可用低毒的山梨酸、无毒的植物茶叶作豆制品复合保鲜剂的优选成分 。

Using 10 percent propolis as natural antiseptic in stead of chemical antiseptic,the product of 2nd generation “Pure N.

用１０％蜂胶做天然防腐剂替代化学防腐剂，研制出王浆蜜的第２代产品“纯天然王浆蜜口服液”。

Using 10 percent propolis as natural antiseptic instead of chemical antiseptic,the product of 2nd generationPure Nat.

用１０％蜂胶作天然防腐剂替代化学防腐剂而研制出王浆蜜的第２代产品“纯天然王浆蜜口服液”，在常温状态下经过１８个月的保存期试验表明，该产品存放一年，不分层、不发苦、不长霉、不结晶，各项指标均达到质量标准。

natural fuel break

天然防火线的防火隔离带如河流

Code for fire protection design of crude oil and natural gas works

原油和天然气工程设计防火规范

It prevented backfire of natural gas that brings deflagration and guaranteed burner safety.

为防止天然气回火造成爆燃提供安全保证依据。

The first line is the firewall.

第一道防线是防火墙。

This morning, however, a fireman accidentally discovered the cause.

然而,今天早晨,一个消防队员偶然发现了起火的原因。

free from reflected wave antenna

防反射波天线, 反射波抑制天线

Electric sunroof in glass version

防紫外线电动玻璃天窗

Use of Natural Preservatives to Prolong the Shelf Life of Meat Product;

天然防腐剂在熟肉制品防腐中的应用

a firemen accidentally discovered the cause.

一个消防队员偶然发现了起火的原因。

Today the entire population has been mobilized to prevent forest fires.

今天动员了所有群众来防止森林火灾。

Implementation of Double Outlet of A Net Security Wall

天融信防火墙3000双路出口的实现

And I want to get you out of the line of fire too, just in case."

我也很想把你从火线上调开，以防万一。”

The enemy opened fire on our lines at dawn.

拂晓时敌人向我们的防线开火。

A barrage of drumfire.

连续的猛烈炮火组成的防线

The immediate orchard boundary should consist of a fire-break.

紧靠种子园边界应设有防火线。

Study on Combustion and Emission Characteristics of a Spark Ignition Natural Gas Engine;

火花点火天然气发动机燃烧与排放特性研究

Study on Some Natural Productions' Protection and Repair Effects on Human Cells from Ultraviolet Irradiation by Cell Model in Vitro;

对人体细胞有紫外线防护和损伤修复功能的天然产物的筛选和细胞学研究

I carried messages and ammunition, in the last day I was shooting, too.

我管送信和运军火，最后一天我也上火线打。