矛盾心理
发表于 2025-3-25 06:45:31
Definition of Covering and Properties of Covering Materials,ique from the other in some cases because the principle involved is the same. The following terms are used for these systems: mulchings, row covers (tunnels), floating mulches (floating row cover), rain shelters, and unheated greenhouses.
枯燥
发表于 2025-3-25 08:08:20
Digital Simulation,Time and magnitude scalings were cumbersome. Inaccuracies were caused by analog systems which cannot separate signal change from noise in principle. There are also frequent breakdowns in hardware components. With the development of digital computers in the late 1960’s and the growth in capacity of m
gustation
发表于 2025-3-25 12:59:46
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装饰
发表于 2025-3-25 17:00:57
Solar Radiation Environment,l close to a blackbody. Solar radiation received at the earth’s surface varies with the season because of the geographical relation between the sun and the earth. Therefore, it is very important to calculate how much of it we can utilize at a given place on the earth at a certain time of the year.
trigger
发表于 2025-3-25 23:39:42
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separate
发表于 2025-3-26 03:14:36
CO2 Environment,he CO. level is fairly constant around 300 to 350µ./. due to photosynthesis by plants, and it rises to around 400 to 450 at night. CO. level is more important under cover, especially in plastic houses where air exchange is normally restricted in order to raise temperatures in a cold climate, and as
Melodrama
发表于 2025-3-26 07:04:45
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多节
发表于 2025-3-26 08:38:37
Control Function,xtensively (Takakura, 1989). Static models are still predominant, and they will be powerful in analyzing particular problems such as comparison of the effectiveness of various thermal screens and estimation of total heat requirements based on actual measurements.
Interferons
发表于 2025-3-26 13:52:48
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尾巴
发表于 2025-3-26 20:48:26
Book 1993eveloped in the simulation language CSMP are fullyused..The subjects covered are of relevance to graduate students, toscientists and researchers in agriculture and biological sciences and,of course, to agricultural organizations in both the developing anddeveloped countries. .