查询词典 thoron

In the process of mining, milling and steel and rare earth melting, thoron element was released to the accessible environment together with smoke, wastewater and disposed slag, leading to radioactive contamination to the environment.

在采矿、选矿、钢铁和稀土冶炼等生产中，钍元素随烟尘、废水和废渣排放至环境中，造成放射性污染。

The radon concentration rises with depth which may be distorted by radon daughters and thoron .(2). Seasonal temperature influence free radon of soil only.

季节温度仅对壤中活动氡运移有影响，对束缚氡影响小；认为温度梯度也是引起空气中氡浓度日变的一个因素；（3）。

The present investigation deals with the differential spectro photometric method for the determination of high content rhodium using thoron as reagent.

应用差示分光光度法在适当的条件下，测量高浓度元素，相对误差可以降低到百分之一以下，能同重量法和容量法相比。

By using high sensitive negative voltage exhaled thoron progeny collection and measurement system, the thorium lung burdens of each dust exposed miner was obtained.

用高灵敏度负高压人呼出气中钍射气子体收集测量系统对每名被检矿工测定其肺内钍的沉积量。

After eliminating the mutual interference , the relative error of radonand thoron measurement are –34.0% and 17.3% compared to the standard radon andthoron concentrations respectively .

理论上推导出了扣除氡钍干扰的关系式，扣除氡钍干扰后 Tn 的浓度与标准浓度相对误差为 17.3%，Rn 浓度与标准浓度相对误差为-34.0%。

A new fading spectrophotometric method for the determination of chromium is proposed, based on the decoloration of thoron Ⅱ oxidized by chromium in the medium of 0.32 mol/L sulphuric acid.

基于在0.32 mol/L硫酸介质中，铬氧化钍试剂Ⅱ褪色，提出了钍试剂Ⅱ褪色分光光度法测定铬的新方法。

The thoriaum and uranium bearing radioactive materials associated with Baotou Municipal Baiyunerbo Mine is typical thoron associated ore.

包头市所属白云鄂博矿平均伴生 0 。0 4 %钍和 0 。0 0 1 %铀放射性物质，是典型的钍伴生矿。

Uranium in the ore is separated and converted into U in HCl andcomplexed with TPC and a new type thoron reagent,2(phosphino-chloro-benzenediazo)-7 (disulfo-naphthyl-diazo)-naphthalene-1, 8 diol-3, 6 disulfonic acid.

铀在 0.5—1.4 mol/l盐酸中，用氯化十四烷基吡啶作增溶剂，铀与偶氮氯膦6，8-萘二磺酸-TPC形成的三元络合物具有极高的灵敏度ε_(705nm=1.6×10~5l·mol~(-1)·cm~(-1)和较好的选择性。

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。