随着渗透胁迫强度的增加和胁迫时间的延长，木质部汁液中的可溶性蛋白质组分主要在14.4~31KD范围内变化。

With the stress degree stronger and the stress time longer, the protein in xylem sap changed among 14.4~31KD for all alternative split-root osmotic stress.

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他的观点是，在某种程度上二者均由运输物质的网络构成——公路，铁路，水路以及煤气管，污水管还有电缆线都在输送物质，动物血管和植物运输汁液的木质部、韧皮部也是如此。

Roads, railways, water and gas mains, sewage pipes and electricity cables all move things around. So do the blood vessels of animals and the sap-carrying xylem and phloem of plants.

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