Sunday 21 August 2011

Sieve Analysis of Fine and Coarse Aggregate

Sample Laboratory Sheet from Sieve Analysis of Fine and Coarse Aggregate

精细与粗集料筛分析样本化验单



Monday 15 August 2011

Escape Velocity

How to calculate escape velocity of a rocket.

Tuesday 9 August 2011

Alkanes


Chemical formula for alkanes : methanes, ethane , propane and decane

Mathematics: Graphical Representation of Inequality Notation


Mathematics: Graphical Representation of Inequality Notation
[keywords: infinity, equal, not more, not less]