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heptad

n. 七个,七个成套之物,七价原子

七个,七个成套之物,七价原子

WordNet (r) 3.0 (2006) (WordNet)

heptad
n 1: the cardinal number that is the sum of six and one [synonym:
{seven}, {7}, {VII}, {sevener}, {heptad}, {septet},
{septenary}]

The Collaborative International Dictionary of English v.0.48 (gcide)

Heptad \Hep"tad\, n. [L. heptas the number seven. Gr. ?, ?, fr.
"epta` seven.] (Chem.)
An atom which has a valence of seven, and which can be
theoretically combined with, substituted for, or replaced by,
seven monad atoms or radicals; as, iodine is a heptad in
iodic acid. Also used as an adjective.
[1913 Webster]

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heptad	查看　heptad　在Google字典中的解释	Google英翻中〔查看〕
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Chevron Richmond — Richmond. chevron. com
Chevron Richmond Refinery is a vital part of the local community
The Refining Process — Richmond. chevron. com
Chevron Richmond takes crude oil and other feedstocks and refines it into gasoline, diesel, jet fuel, fuel oil and lubricating base oils On average, Chevron Richmond processes about 250,000 barrels of crude oil All of the crude oil we process arrives at our refinery via ship and is unloaded at our Richmond Long Wharf
About — Richmond. chevron. com
The Chevron Richmond Refinery creates products that fuel progress here in Richmond and around the world
chevron in richmond - richmond. chevron. com
During WWII, Chevron Richmond contributed to Richmond’s proud wartime eforts by developing and supplying fuels for military planes and ships In 1945, more than 1,100 women worked for Chevron Richmond to ensure the refinery continued to meet critical energy needs
History — Richmond. chevron. com
The refinery’s growth was mirrored by a steady increase in Richmond’s population from about approximately 70,000 in 1975 to 101,000 by 2003 Chevron (the city’s largest employer) and other companies supported sustained job creation and other economic benefits, which along with a harbor redevelopment project and new housing, contributed to
Products — Richmond. chevron. com
From gasoline, to jet and diesel fuel, and lubricating base oils, the Richmond Refinery makes products people use every day
Refinery Modernization — Richmond. chevron. com
The Refinery Modernization Project is an approximate $1 billion investment to modernize our facilities by replacing older equipment with more modern technologies to create a newer, safer, cleaner Refinery Modernization will enable the refinery to continue to competitively produce gasoline, diesel and jet fuel, and lubricating base oils that meet California's strict environmental regulations
History — Richmond. chevron. com
At the Richmond Refinery, we have a comprehensive network of safety systems in place to keep our plants running safely and reliably For 116 years, our priority has remained to be a safe and responsible neighbor in Richmond Chevron is also committed to creating social and economic value wherever we do business
Contact Us — Richmond. chevron. com
We want our community to have a clear and confident understanding of our operations in Richmond Chevron Richmond Chevron Products Company A division of Chevron U S A Inc 841 Chevron Way Richmond, CA 94801
June 2025 Flare Causal Report - richmond. chevron. com
Attached is the flaring causal analysis report for June 2025 for Chevron’s Richmond Refinery This report is submitted pursuant to Regulation 12, Rule 12, Section 12-12-406 The report is due within 60 days of the end of June 2025 for any reportable flaring events that occurred during the month of June 2025

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