遊戲
應用程式
影視
圖書
兒童
google_logo Play
遊戲
應用程式
影視
圖書
兒童
none
search
help_outline
使用 Google 帳戶登入
play_apps
媒體庫和裝置
payment
付款與訂閱
reviews
我的 Play 動態
redeem
優惠
Play Pass
settings
設定
隱私權政策
•
服務條款
遊戲
應用程式
影視
圖書
兒童
電子書
Resins in Coal
5.0
star
免費
Precision of the Volatile-matter Determination for Anthracite, Low-temperature Coke, and Subbituminous Coal
免費
Determination of Moisture-holding Capacity (bed Moisture) of Coal for Classification by Rank
5.0
star
免費
An Investigation of a Laboratory Test for Determination of the Free-swelling Index of Coal: Revision of R.I. 3989
免費
Analyses of Ash from Coals of the United States
5.0
star
免費
Fusibility of Ash Coals of the United States: Volumes 207-212
免費
Low-temperature Distillation Yields of Primary Tar and Light Oil from Coals of Various Ranks and Types
免費
Notes on the Sampling and Analysis of Coal
免費
Clinker Formation as Related to the Fusibility of Coal Ash
免費
The Determination of Moisture in Coke
免費
Low-temperature Carbonization of Alaskan Coals
免費
Methods of Sampling and Analyzing Coal-mine Dusts for Incombustable Content
免費
Methods of Analyzing Coal and Coke
免費
The Determination of Combustible Matter in Silicate and Carbonate Rocks
免費
Analyses of Mine and Car Samples of Coal Collected in the Fiscal Years 1916 to 1919: Issue 193
免費
Mining and Preparing Domestic Graphite for Crucible Use
免費
Carbonizing Properties: West Virginia Coals from the Eagle, No. 2 Gas, Pocahontas No. 3 and Pocahontas No. 4 Beds, Issues 487-493
免費
Splint Coals of the Appalachian Region: Their Occurrence, Petrography, and Comparison of Chemical and Physical Properties with Associated Bright Coals
5.0
star
免費
Friability, Grindability, Chemical Analyses, and High- and Low-temperature Carbonization Assays of Alabama Coals
免費
Comparison of Small and Large Scale Experimental Carbonizing Apparatus: Tests of Pittsburgh Bed Coal from Allison Mine, Fayette County, Pa., and of a Coal from the Michel Mine, British Columbia
免費