知道
发表于 2025-3-23 09:58:55
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synovitis
发表于 2025-3-23 16:14:30
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mastoid-bone
发表于 2025-3-23 18:36:32
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extrovert
发表于 2025-3-24 01:36:40
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沙发
发表于 2025-3-24 04:34:05
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哑剧
发表于 2025-3-24 08:00:28
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哎呦
发表于 2025-3-24 14:35:40
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mediocrity
发表于 2025-3-24 15:43:58
The toxicology of methyl ethyl ketone,th a characteristic odor resembling that of acetone. Its odor threshold has been reported to be in the range of approximately 0.25 to 0.025 ppm (Krasavage et al. 1982, OHMTADS 1985). It is soluble in about four parts water (27.5%) but is less soluble at higher temperatures; it is miscible with aceto
MIRTH
发表于 2025-3-24 21:01:24
Effects of synthetic pyrethroid insecticides on nontarget organisms, and have tremendous agricultural potential (Harris and Turnbull 1978). Moreover, pyrethroids are much less persistent than the organochlorine insecticides, such as DDT and dieldrin, and apparently do not accumulate in the environment.
Musket
发表于 2025-3-25 00:24:49
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