查询词典 sulfurization

N-substituded thioacridones with five different structures were synthesized via a route involving Ull-man reaction, cyclization, N-alkylation and sulfurization. The structures of each thioacridone were identified with IR and MS. The results from UV-spectrophotometry show that the five N-alkythioacridones all have stronger absorption in the visible light region.

采用乌尔曼反应、酸催化环化、N-烷基化和硫代化四步反应路线合成了5种不同结构的N-取代硫代吖啶酮，利用IR和MS分析手段表征了其结构，UV分光光度计的测定结果表明5种硫代吖啶酮在可见光区都有较强的吸收。

Main usages of the JNS: steel-covered chimneys and flues used in thermal power stations, preheating devices, de-sulfurization equipmentschemical storage vessels, atmospheric pre-heating devices, boiler press vessels,rubbish incinerator,blowers,containers , railway vehicles, drilling derricks, oil-drilling-platforms and other vessels for sulfuric corrosive medium contained in chemical industry facilities.

JNS的主要用途：火电厂的钢套筒烟囱及烟道、预热设备、脱硫设备、化学储罐容器、空气预热器、锅炉压力容器、集装箱、铁道车辆、石油井架和采油平台以及化工石油设备中含硫腐蚀介质的容器等。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。