正半錐 的英文怎麼說
中文拼音 [zhēngbànzhuī]
正半錐
英文
positive hemipyramid-
Jzc series concrete mixer is gravity type twin - prick reversed discharging mixer. stirring roller is driven by geared ring, and it will stir deasil and discharge reversely, and can stir plastic, damp dry and hard concrete, fit for common building site, road, bridge project and different concrete component factory
Jzc系列混凝土攪拌機系自落式雙錐反轉出料攪拌機，攪拌筒由圈傳動，工作時正轉攪拌，反轉出料，可攪拌塑性和半干硬性混凝土，適用於一般建築工地道路橋梁工程及各種混凝土構件廠。We extend this result which is similar to ones of hirsch [ 1l ] and jiang [ 2 ] for 3 - dimensional cooperative system. furthermore, in the paper we discusse the cone of km, and obtain the similar result : theorem b : let f be a continuously differentiable cooperative vector field on d, suppose the following conditions hold : ( a ) d is pm - convex ; ( b ) every forward semi - orbit has compact closure in d ; ( c ) there is not more than one equilibrium p, then there is a unique equilibrium p and it is globally asymptotically stable
此外，本文還將在k _ m錐下討論此問題，並得到平行的結果：定理b ：設f是d上一個連續可微的合作向量場，假設如下條件成立： （ a ） d是p _ m凸的； （ b ） d中的每一個正半軌道有緊閉包； （ c ）至多有一個平衡點p ，則一定存在唯一的平衡點p ，並且是全局漸近穩定的。The paper deduced the seal torque of the tri - eccentric butterfly valve and gave it a qualitative analysis. the results indicated : for the tri - eccentric butterfly valve with the same caliber, theseal torque would decrease with the butterfly disc thickness increasing ; the seal torque would increase with the radial eccentricity increasing ; however, the axis eccentricity effected on the seal torque minutely ; the seal torque would increase with the half cone angle increasing appreciably of the cone which the butterfly disc belonged to
本文還對三偏心蝶閥的密封力矩作了推導並進行了定性的分析，結果表明，對于同一口徑的三偏心蝶閥，密封力矩與蝶板的厚度近似成反比；與徑向偏心距近似成正比，變化也很明顯；而軸向偏心距對密封力矩的影響不是很大；密封力矩隨著蝶板所在的圓錐半錐角的增大而有所增加。
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