大家在查： fluorouracil 保墒 rollcall 卡拉•布鲁尼 tongue depressor 泡沫材料 city slicker coyer 基拉韦厄 perverseness

niobium

美 [naɪ'əʊbiəm]英 [naɪ'əʊbiəm]

n.铌
网络铌粉；铌金属；钶

niobium

niobium

权威英汉双解英-汉英-英网络释义

niobium

n.

铌

相对原子质量_百度百科 ... zirconium 锆 niobium 铌 molybdenum 钼 ...

铌粉

;;497-18-7;碳酰肼; CAS ... Nickel sulfate hexahydrate 六水硫酸镍 NIOBIUM 铌粉 (禁止航空运输040712) METHYL VIOLET 结 …

铌金属

铌 1. 铌金属(niobium)：铌是稀有高熔点金属。熔点2467℃，密度8.6g/cm3，晶格类型：体心立方。

钶

主要金属元素及物理性质 ... 锂 Lithium 钶(铌) Niobium 元素 Elements ...

铌合金

铌合金(Niobium)25mm轮圈（26寸）CHOSEN培林花鼓手工编轮组附快拆,高压衬带 100mm / 135mm / 32H

年开始批量生产铌

开始生产的英文|开始生产是什么意思... ... 开始生产多用途钞票夹： Money Clip with Knife 年开始批量生产铌 ： niobium ...

元素铌

...a bene[拉丁语] 注意,留心 Nb 【化学】元素铌(niobium)的符号 n.b. abbr. nota bene [拉丁语]注意,留心

1

It is difficult to separate from niobium , the element above it in the periodic table , with which it shares many properties .

很难将它与铌分开，铌是周期表中钽的上面一个元素，两者具有许多共同的性质。

4

Recently various new reagents and detection methods were used to the photometric detection of niobium .

近年来各种新试剂、新方法的不断涌现，使铌的光度分析有了新的进展。

5

Platinum composite electrode was prepared that platinum was compounded on titanium , tantalum, and niobium substrates by proper technology .

铂复合电极是通过适当的工艺将铂复合在钛、钽、铌等基体上。

10

11

CHEMICAL ANALYSIS OF FERRONIOBIUM. DETERMINATION OF NIOBIUM BY X RAY FLUORESCENCE SPECTROMETRY .

铌铁合金的化学分析 .X 射线荧光光谱法测定铌含量

15

17

Niobium is a soft metal used in producing superconducting steel .

铌是制造超导钢制品的一种软金属。

18

A new catalyst, niobium acid, was used for the synthesis of di 2 ethylhexyl maleate with yield of 86.

研究了用新型催化剂铌酸催化合成马来酸二辛酯的工艺。

19

Using niobium acid as catalyst , cyclohexane as dehydrant, benzyl propionate was synthesized based on propionic acid and benzyl alcohol .

以铌作催化剂，环己烷为带水剂，用丙酸和苯甲醇直接合成了丙酸苄酯。

22

Niobium in the low alloy steel was determined by spectrophotometry .

用分光光度法可以测定低合金钢中的铌。

25

alloy CMn (VNb) with additions of vanadium , niobium but no titanium (Ti002%) and.

合金添加了钒，铌，但是没有钛（钛的含量少于 0.002%）

26

The appropriate content of niobium or phosphotungstic acid was 4% (w).

较佳的铌、磷钨酸的质量分数均为 4%。

28

Brazil holds the world's biggest known niobium reserves, according to national mining department DNPM.

据巴西矿业部（DNPM ）说，巴西拥有世界最大的几个已探明铌矿储备。

29

For niobium powder and bars .

铌粉，铌条用原料。

30

a black mineral that is an ore of niobium and tantalum .

一种黑色矿物，是铌、钽矿石。

热词推荐

大家在看