Specific chemical behavior of Nb and Ta in geological sample preparation with PTFE Bomb for ICP-MS analysis ICP-MS分析用地质样品制备过程中Nb、Ta等元素的特殊化学行为
Present and Future of the Researches on Chemical Time Bomb in Soil 土壤环境中化学定时炸弹的研究现状与展望
Heavy metal "chemical time bomb" and its prevention and control 重金属化学定时炸弹及其防治
By way of the chemical thermodynamic state function and based on the Van Der Waals 'gas state equation and the relational expression of specific heat at constant pressure, the relational expression of specific heat of real gas at constant volume in the oxygen bomb is inferred. 采用化学热力学状态函数法,根据真实气体范德华状态方程式和气体恒压比热关系式,导出了氧弹内真实气体的恒容比热关系式。
This article deals with the important applications of chemical knowledge in military which include explosive, smoke bomb, pyrotechnical cartridge, chemical poison, tear bomb, lighting bomb and so on. 本文介绍化学知识在军事中的重要应用,包括炸药、烟幕弹、信号弹、化学毒剂、催泪弹、照明弹等等。
Sediments, accommodating various kinds of metals from weathering of drainage basins and anthropogenic discharges, may become a potential "chemical bomb" gradually. 沉积物容纳了来自流域自然风化及人为排放的各种金属元素,成为一个潜在的“化学炸弹”。
The article introduces the concept and characteristics of "chemical time bomb", and points out that the accumulation process of heavy metallic elements in soil is the typical" geochemical time bomb", which will result in huge loss once it erupts. 介绍了化学定时炸弹的概念及特点,指出重金属元素在土壤中的累积过程是典型的化学定时炸弹形成过程,一旦爆发将会产生巨大的生态与经济损失。
Research on Chemical Time Bomb in the Beijing Suburb Sewage-Irrigated Soil 北京市郊污灌区土壤重金属化学定时炸弹研究
Natural water is one of the main ecosystems contaminated by heavy metal. Since sediments of the natural water contaminated by heavy metal are usually called as "Chemical Time Bomb", the sediments are chosen as an indicator of heavy metal contamination. 天然水体是受重金属污染的主要生态系统之一,受重金属污染的水体沉积物被喻为化学定时炸弹,沉积物是水环境重金属污染的指示剂。
The simulation chemical explosion was carried out to study the car bomb blast on city streets. The propagation rule of blast wave caused by ordinary explosive on street and was studied, the influence rule of type of classical street crossings to blast wave diffusion also been researched. 对汽车炸弹在城市街道爆炸进行了模拟化爆试验研究,探究了常规炸药在街道爆炸时冲击波的传播规律,典型街道交叉口类型对冲击波传播的影响规律。