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allene
释义
allene
Encyclopedia
理学
联烯
释
allene
联烯
含有两个连续的碳碳双键的碳氢化合物。
理学
丙二烯
释
propadiene; allene
丙二烯
最简单的含累积双键的烯烃。常与丙炔共存于石油裂解制乙烯过程中产生的碳三馏分中。分子式CH2═C═CH2。
Chemistry
>有机化学>有机化合物>释义
allene
联烯
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presumption
presumption of causation
presumption of constitutionality
presumption of fault
presumption of innocence
presumptive
pre-supernova
pre-supernova binary
pre-supernova object
presuperscript
pre-support
presuppose
presupposition
pre-swirl
pre-swirl in turbine cooling air system
presynaptic element
presynaptic inhibition
presynaptic membrane
presynaptic portion
presynaptic potential
PRETCO
pre-telescope astronomy
pretensioned prestressed concrete structure
pretest
pretest method
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