Secondary in abundance are aromatic sester and sesquiterpenoid hydrocarbons,but aromatic diterpenoids, most of the regular PAH are found at trace levels only.
但芳香二萜类，大多数常规多环芳烃仅以微量形式存在。
Sester
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Ancient Roman units of measurement
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The ancient Roman units of measurement were largely built on the Hellenic system, which in turn was built upon Egyptian and Mesopotamian influences. The Roman units were comparatively consistent and well documented.
- claws back
- claw scissors
- claw setting
- claws for attaching
- clawshaped
- claw shaped
- Claw shaped deformity
- claw shear
- claw shell brake
- claw sickness
- claw something back
- Clawson
- claw spatula
- claw sth back
- claw stop
- claw suspension
- claw suspension gear
- claw syringe
- claw thumpers
- claw tipping mechanism
- Clawtoe
- claw toe
- Claw Toes
- Clawtoes
- Clawton