Parts per Million (ppm) and Parts per Billion (ppb)Used for extremely dilute solutions, these units express the ratio of parts of solute per either 1 million parts of the solution or 1 billion parts of a solution. Example: A sample of water is found to contain 2 ppm lead. This means ...
aU.S.President George W.Bush asked Congress for about U.S.＄1 billion for Space Launch initiative in 2004,funds that would be almost equally split between the Orbital Space Plane Next Generation Launch Technology 2004年U.S.President乔治W.Bush大约要求国会U.S.$1十亿为空间发射主动性,几乎相等地...
(low current) life compared to electromagnetic relays. The mechanical life of the reed relays that we use is well in excess of one billion operations. Furthermore, failures during the service interval are rare, so the number of failures per billion operations in the first billion operations is...
Net profit margin = ($4.2 billion ÷ $29.06 billion) × 100 = 14.45% This example illustrates the importance of having strong gross and operating profit margins.Weakness at these levelsindicates that money is being lost on basic operations, leaving little revenue for debt repayments and taxes....
The Center for International Environmental Law thinks that Credit Agencies are miscalculating the risk of climate change - that climate change might be the cause of the next financial crisis. According to the CIEL report; Anthropogenic climate change ass