Humic acid (HA ) was abstracted from leonardite,and a composite superabsorbent (HA PSA ) was prepared by compounding poly (acrylic acid ) and lignitic humic acid.
以风化褐煤为原料制备腐植酸(HA),将HA与普通型保水
(PSA)
,获得HA型保水(HA-PSA)。
Humic acid (HA ) was abstracted from leonardite,and a composite superabsorbent (HA PSA ) was prepared by compounding poly (acrylic acid ) and lignitic humic acid.
以风化褐煤为原料制备腐植酸(HA),将HA与普通型保水(PSA),获得HA型保水(HA-PSA)。
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：以上例句、词性分
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