混汞析金法的英文怎麼說

Method of analysis baryte for export. determinationof water - solluble alkaline earth metals as calcium

出口重晶石分析方法.水溶性堿土金屬以鈣計的測定

Antimony concentrates - determination of gold content

銻精礦化學分析方法金量的測定

Using cd, cu, zn and cr as experimental toxicants and crucian as experimental creature, we employed the environmental biotechniques ( flame atomic absorption spectrophotometry, the method of improved pyrogallol autoxidation and electron microscopy ) to study the acute toxicity and secure concentrations of heavy metals to crucian ; the accumulation and distribution of mixed heavy metals to fingling crucian ; the activities of superoxide dismutase ( sod ) of gill and liver tissues and the hispathological and ultrastructural change of superfine structure of liver and kidney of crucian after cadmium exposure. through which, we intended to fully and systemically study the toxic influence of heavy metals to fish, and preliminarily discuss the influence of heavy metals pollution to the diversified level of fish such as individual, organ, tissue, cell and molecule. thus we tried to provide scientific evidence to establish preventative management measures, avoid and relieve the harm of heavy metals pollution to aquicolous ecosystem in time

隨后以這幾種重金屬作為實驗毒物，以鯽魚為實驗動物，應用環境生物技術、火焰原子吸收分光光度法、鄰苯三酚自氧化法、透射電鏡等技術研究了重金屬cu 、 zn 、 cd和cr對鯽魚的急性毒性及其安全濃度評價、混合重金屬在鯽魚幼體組織內的積累和分佈、 cd對鯽魚鰓和肝臟中sod活性的影響、 cd對鯽魚肝細胞和腎細胞超微結構的影響等，全面和系統地研究了水環境中重金屬暴露對魚類的毒性影響，初步探討了重金屬污染對魚類的個體? ?器官? ?組織? ?細胞? ?分子等各水平層次的影響，為制定漁業生產上預防性的管理措施提供科學依據，及時避免或減輕重金屬污染對水生生態系統造成的損害。

The methods of direct measurement with low precision such as frequency and time interval methods and the methods of indirect measurement with high precision such as beat frequency method, dual mixer time difference method and frequency difference multiplying method are supported on the platform. the fundamentals of each method are studied. the quantization error is analysed and the illustration is given for each method

該平臺支持直接頻率和時差法兩種較低精度的測量方法以及雙混頻時差法、差拍頻率法和頻差倍增法高精度的簡接測量方法，本文研究了各種測量方法的原理，對各種測量方法的量化誤差作了分析，並給出具體的實例。

For the structural engineering, the constitutive relations of concrete members under the strength will be nonlinear or elasticoplasticness, in this paper, ottosen constitutive model is adopted, and mohr - coulomb strength principle is selected as destructive principle, the concrete cantilever beam is analyzed by using nonlinear efgm, the calculation result by nonlinear efgm is compared with the analysis software of adina, the comparing proves that efgm used to dissolve the concrete nonlinear problem is feasible

目前，無網格伽遼金法主要研究都集中在線彈性材料上，在結構工程中，混凝土構件受力后的本構關系為非線性或彈塑性，本文首次在無網格伽遼金法中引入混凝土的ottosen本構模型和莫爾庫侖強度破壞準則，對混凝土懸臂梁等構件進行了非線性無網格分析，並與國際著名結構分析軟體adina的計算結果進行了對比，表明採用無網格伽遼金法解決混凝土非線性問題是可行的。