[医] valval;valvular ;
例句:
1、
Semidouble-double light-medium blue shaded ruffled pansy. Dark green, wavy, serrated. Standard.
半重瓣到重瓣的亮到中蓝色折边菫型花. 深绿色波浪型锯齿边缘叶.标准型.
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2、
Globe valves are normally installed with flow and pressure under the disc.
通常安装截止阀时,都是使得流进的流体和压力位于阀瓣的下方.
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3、
This will minimize liner wear by distributing stem and disc weight evenly.
这样能够均匀的分配阀杆和阀瓣的重量,最大限度减少衬垫磨损.
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花瓣的英文：petal参考例句：The anthemion petal motif was especially popular on the moldings of ancientGreek cornices.古希腊飞檐的线脚尤其常用忍冬饰花瓣基本图案。A usually dense,cylindrical,often drooping cluster of unise
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