停留时间分布试验 | |
met. | RTD experiment |
研究 | |
gen. | investigate; investigation |
environ. | research |
hydroel.st. | study; search |
met. | survey; testing |
space | research, test, development and evaluation |
tech. | research |
| |||
RTD experiment |
停留时间分布试验 : 3 phrases in 1 subject |
Metallurgy | 3 |