粗钨酸钠溶液
impure sodium tungestate solution
水合物和游离气含量
Hydrate and free gas concentration
水合物防治
hydrate prevention and control technology
水合物成藏
gas hydrate reservoir formation
水合物
Gas
HYDRATES
Hydrate
gas hydrate
clathrate hydrate
plugging material
hydrate compound
hydrate formation
Aquo compounds
Gathering and Transportation Pipe Network
Hydrous
gas hydrates
Hydrafrac