挥发的

Solid acid catalysts have been found to be useful catalyst in a variety of organic reactions. They have many advantages, such as non-toxic, inodorous, non-volatile; non-corrosive, non-pollution, mild reaction conditions, high yields and reactivity, excellent stability and simple work-up procedure, and these are what liquid catalysts cant replace.

固体酸催化剂在有机合成反应中应用广泛，这类催化剂无毒无味，不挥发，不污染环境，不腐蚀设备，容易回收，可重复使用，所催化的反应条件温和，产率和选择性高，后处理简便，且具有独特的催化性能，这些是液体催化剂所不能代替的。

Since the end of the period of accretion, more than four billion years ago, there has been a continual exchange of volatile material including water between the surface of the earth and the planet抯 interior ( that is, between the crust and the mantle ).

自增生阶段结束以来，在40亿年前，地表和地球内部的挥发性物质存在一个连续的交换过程，也就是地壳和地慢的交换。

Some researches on kinetics model and the characteristic ofvolatilization of trace elements have been done in this thesis.

本文以燃煤过程中的典型痕量元素作为对象，对它们的化学动力学模型和挥发特性做了一些初探性的研究。

"We're counting on a paint saving of about 25 percent, along with reduced sludge handling and smaller emissions of volatile organic substances," says Lasse.

Lasse 说："我们计算它可以节省25%的油漆，以及减少漆泥的处理和有机物质的挥发"

In the heat of the press is operating conditions, paper moisture volatile producing steam, which is to reduce the isolation of composite luting agents as well as a hotmelts surface crust, leveling, permeability compromised.

在热压合工作条件下，纸张所含水分挥发产生的水蒸汽，既是降低复合粘接力的隔离剂，又是热熔胶表面结皮，流平性、渗透性遭到破坏的因素。

Among them, metallo-organic complex with electrical bistable states is a potential material for a new kind of electrical storage with all the merits of a storage as mentioned above.

其中金属有机络合物电双稳态材料具有可制成同时兼有高密度、大容量、快速可读可写、非挥发和功耗与存储容量无关的优点的存储器的潜力。

Dichlorvos was once a good product and widely used for its outstanding effect on knocking down insects and easy volatilizing. But DDVP and chlorpyrifos are limited to use for the reason of safety. According to the recommendation of WHO, a new miticide,pirimiphos-methyl, was developed by Hunan chemical academy in 1999. It can be used for controlling mosquitoes, flies, cockroaches and mites et al.

有机磷杀虫剂中的敌敌畏由于具有击倒作用与杀灭能力较强，又有自然挥发功能，所以，是应用最广的品种，但DDVP在卫生杀虫剂中已处于限制使用状态。1999年，湖南化工研究院，根据WHO的推荐，研制开发了广谱，速效杀虫，杀螨剂—甲基嘧啶磷，可用于防制蚊，蝇，蟑螂和螨等。

Our contribution to tackling air pollution starts with reducing the emissions from our facilities that contribute to smog and acid rain - nitrous oxide, sulphur dioxide (SO2) and volatile organic compounds.

我们对解决空气污染问题的贡献是开始增设减少排放量的设施，使这些设施促进烟雾和酸雨-一氧化二氮，二氧化硫（ SO2 ）和挥发性有机化合物的减少。

In this paper we summarized the research on mosquito olfaction and chemical ecology in the past 20 years.

蚊虫的触角、下鄂须和口喙上的嗅觉感器感觉环境中释放的各种挥发性化合物。

Osb. were stored in ultra low oxygen condition (0.3% O 2 + 0.0 %CO 2) at 5 ℃ and in normal air condition at 5 ℃ and 10 ℃ to investigate the contents of volatile compounds in fruit tissue, in order to evaluate the fruit quality and physiological disorder in ultra low oxygen atmosphere storage.

Osb 。果实在短期超低氧贮藏条件下，果皮和果汁中乙醇和乙醛等挥发性物质的含量，以及它们在不同贮藏温度和货架存放期间的变化和对果实风味品质的影响。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。