output
发表于 2025-3-26 22:18:19
A. S. Perry,I. Yamamoto,I. Ishaaya,R. Perryst books on analog filter design brieflypresent the signal processing/systems concepts, and then concentrateon a variety of filter implementation methods, the present bookreverses the emphasis, stressing signal processing concepts. Filterimplementation topics are presented in Part II: passive filter
Veneer
发表于 2025-3-27 04:04:33
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iodides
发表于 2025-3-27 07:05:39
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四目在模仿
发表于 2025-3-27 12:13:10
Function and Classification,gally classed as economic poisons and are defined as any substance used for controlling, preventing, destroying, repelling, or mitigating any pest. According to this classification, many chemicals such as attractants, repellents, chemosterilants, hormonal agents, etc., are also designated as pestici
Corral
发表于 2025-3-27 14:30:33
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chapel
发表于 2025-3-27 21:04:14
Toxicology of Insecticides,o an organism is usually expressed in terms of the LD.. that is, the amount of poison per unit weight of the organism required to kill 50% of the test population. The LD. is usually expressed in milligrams per kilogram of body weight (mg/kg). Under certain conditions, the term micrograms per insect
absorbed
发表于 2025-3-27 22:26:03
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脆弱带来
发表于 2025-3-28 03:06:27
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Ringworm
发表于 2025-3-28 09:08:20
Evaluation of Toxicity in Higher Animals,le the process for determining LD. is identical, greater emphasis is placed on qualitative rather than quantitative aspects of poisoning. Another characteristic of toxicological tests in higher animals is that, in most cases, the overriding concern is the evaluation of safety for man.
delegate
发表于 2025-3-28 13:14:57
The Nervous System as Insecticide Target,he nervous system, which shows irreversible damage, more so than any other tissue in the body. Poisons which affect other organs of the body commonly produce their ultimate effect on the nervous system. For example, atropine (a heart poison) and carbon monoxide (which blocks the oxygen carrying capa