sieve-tube element 筛管分子
sieve-tube cell 筛管细胞
sieve tube element 筛管分子
sieve tube [植] 筛管
mature sieve tube elements 成熟筛管成分
sieve-tube 筛管分子
ray sieve tube 射线筛管
sieve tube cell 筛管细胞
This machine USES the S-shaped milling cutter to extrude materials into particles through stainless steel sieve tube.
本机是用S型碾刀，通过不锈钢筛筒的筛孔，把物料挤出颗粒的设备。
The utility model relates to a corundum sieve tube used in the field of oil field and oil well production.
本实用新型涉及油田油井开采领域中用到的一种刚玉筛管。
The tracheid and sieve tube elements are all differentiated from the procambia in the center of the haustoria, and the former occurs prior to the latter.
吸器中管胞和筛管都是从吸器中央具有原形成层特性的细胞分化的，管胞的分化先于筛管，或同时进行。
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