1.
It was dated by the potassium-argon method to 1. 8 million years old.
由钾―氩法测定其年龄为180万年。
2.
potassium-argon age
钾-氩(法测得的)年龄
3.
STUDY ON UNDETERMINED ARGON SPECTRAL LINES BY LASER INDUCED FLUORESCENCE
激光诱导荧光法研究氩的未定性谱线
4.
Determination of traceable nitrogen in argon with PDHID-GC
高纯氩气中微量氮的(PDHID-GC)测定方法
5.
Potassium-argon dating: Method for determining the age of igneous rocks Based on the amount of argon-40 in the rock.
钾－氩年代测定法: 根据岩石内氩－40的含量来测定火成岩形成年代的方法。
6.
" Determination of trace argon, nitrogen and krypton in oxygen--Gas chromatographic method"
GB/T14605-1993氧气中微量氩、氮和氪的测定气相色谱法
7.
THE ACCURATE MEASUREMENT OF 10~(-8) G. ARGON BY GAS CHROMATOGRAPHY
气相色谱法精确定量测定10~(-8)克微量氩
8.
DETERMINATON OF TRACE He,Ne AND Ar IN GAS SAMPLES BY IDMS
同位素稀释质谱法测定气体样品中微量氦氖氩
9.
A STUDY ON ARGON-OXYGEN COMBINATION BLOWING PROCESS FOR LOW-CARBON CAST STAINLESS STEEL
氩-氧复合吹炼法生产低碳不锈铸钢的试验研究
10.
The Measurement and Analysis of Argon Plasma Arc Temperature Distribution Using Off-axis Peak Intensity Method
用离轴峰值法测定氩等离子体电弧的温度分布
11.
Discussion on analyzing oxygen and argon in hydrogen production by chemical way auxiliarily;
用化学辅助法对氢气中氧氩分析的讨论
12.
The Process Mechanism Analysis and Control Method Research of Steel-Making Bottom Blowing Argon
炼钢底吹氩过程机理分析与控制方法研究
13.
Argon plasma coagulation for Barrett's esophagus:a systematic review
氩离子凝固疗法治疗Barrett食管的系统评价
14.
The application of argon plasma coagulation in the treatment of gastrointestinal diseases
氩离子凝固疗法在消化道疾病中的应用进展
15.
Inspecting methods of porosity welded joints in TIG welding
钨极氩弧焊焊接气孔产生原因查找方法
16.
Clinical application of argon-arc welding in prosthodontics
氩弧焊接方法在口腔修复工艺技术中的应用
17.
Butadiene for industrial use--Determination of oxygen and argon in the gaseous phase above liquid butadiene --Gas chromatographic method
GB/T6021-1985工业用丁二烯液上气相中氧和氩的测定气相色谱法
18.
DETERMINATION OF Ar CONTENT IN AIR SEPARATOR WITH OXYGEN REACTOR
利用氧气反应炉法测定空分装置中氩组分的含量