The reactivity of wheat straw soda lignin ( WSSL ) can be improved by demethylation modification.是什么意思？

The reactivity of wheat straw soda lignin ( WSSL ) can be improved by demethylation modification.

麥草堿木素在堿催化下經(jīng)脫甲基改性可提高其反應活性.

the

art. 指已提到的人（物），指說話人與聽者已知的人（物），用于獨一無二的事物前，與形容詞最高級和序數(shù)詞連用；

例句
He did have a real knowledge of the country...
他對該國的確知之甚多。

reactivity

例句
The reactivity of wheat straw soda lignin ( WSSL ) can be improved by demethylation modification.
麥草堿木素在堿催化下經(jīng)脫甲基改性可提高其反應活性.

of

prep. 關于，屬于…的，由…制成；aux. 助動詞 [非標準用語、方言] =have [主用于虛擬語氣]；

例句
He did have a real knowledge of the country...
他對該國的確知之甚多。

wheat

n. 小麥；

例句
...fields of ripening wheat and barley.
一片片正在成熟的小麥和大麥

straw

n. 稻草，麥稈，吸管，毫無價值的東西；

例句
I wouldn't be seen dead in a straw hat.
我死也不會戴草帽。

soda

n. 蘇打，碳酸鈉，蘇打水，汽水，蘇打點心；

例句
Examples: Soda Water, Apollinaris, Poland , Seltzer , and Vichy.
例如: 蘇達水飲料、德國婆林礦泉水、蘭礦泉水、德國)爾特札礦泉水、法國)希礦泉水等.

lignin

n. 木質(zhì)素；

例句
After FP acidolysis, the lignin was once again found to be GSH type just like MWL.
3.麥草磨木木素屬于典型的GSH型木素,經(jīng)甲酸酸解后, 幾乎不存在對羥苯基,紫丁香基所占比例大.

can

aux. 能夠，可以，有機會；n. 金屬罐，一聽，金屬容器；vt. 將…裝罐保存，炒…魷

例句
When I listen to her play I can hear a new Nigel Kennedy.
從她的演奏中我聽出了新一代的奈杰爾·肯尼迪。

be

v. 是，有，存在，做，成為，發(fā)生；aux. 用來表示某人或某物即主語本身，用來表示某人或某物屬于某一群體或有某種性質(zhì)；

例句
The older child should be able to prepare a simple meal...
那個年紀稍大的孩子應當會做一頓簡單的飯菜。

improved

adj. 改良的；v. 改善，改進，提高( improve的過去式和過去分詞 )，提高（土地、地產(chǎn)）的價值，利用（機會），抓緊（時間）；

例句
Air safety has not improved since the dramatic advances of the 1970s...
航空安全自從20世紀70年代得到顯著提高之后，至今再沒有任何改善。

by

prep. 在…旁邊，表示方式，由于，經(jīng)過；adv. 經(jīng)過，表示保留或保存時用，短暫拜訪；

例句
...expensive make-up that we saw being advertised by a beautiful model...
我們所見的由一位漂亮模特代言的昂貴化妝品

demethylation

反甲基化；

例句
Benzbromarone was synthesized from salicylaldehyde by condensation with chloroacetone, reduction, acylation, demethylation and bromination overall yield.
以水楊醛為原料,經(jīng)縮合、還原、酰化、脫甲基、溴化反應制得苯溴馬隆,總收率40.6%.

modification

n. 修改，修正，變更，改良，改進，緩和，減輕，限制，[語]修飾，（用變音符號的）母音改變，[生]誘發(fā)變異，變態(tài)，變體，變型；

例句
Its anticorrosion mechanism, methods of preparation and composite modification are summarized.
介紹了聚苯胺涂層的防腐蝕機理, 制備方法及其復合改性的情況.

...the spiralling vortex airflow that slows the plane.
使飛機減速的螺旋形氣流渦旋

You just go on ahead. I'll come by later...
你只管先往前走。我隨后就來。

He who spares his rod hates his son, But he who loves him chastens him early.
24不忍用杖打兒子的,是恨惡他;疼愛兒子的, 趁早管教.

For further information, please contact 414 3925, extension 2253.
詳情請致電414 3925,轉分機2253。

He sat there while I made the case for his dismissal...
他坐在那兒，聽我陳述解雇他的理由。

Baroness Thatcher's claims seem credible to many.
撒切爾女男爵的主張在很多人看來是可信的。

Nothing to be got without pains but poverty.
一份耕耘，一份收獲。

This decree obliges unions to delay strikes.
該法令迫使工會推遲罷工。

The right to demand payment from the endorser of a commercial paper when the first party liable fails to pay.
追索權當有支付義務的第一方不能支付時，可以向商業(yè)票據(jù)的背書人要求支付的權力。

Public cooperation is vital in the fight against terrorism.
公眾的合作在抗擊恐怖主義的斗爭中至關重要。

To expect automatic protection from the police is impractical.
期望警方自動提供保護是不現(xiàn)實的。

Telephone is now a household necessity.
現(xiàn)在電話是一種家庭必需品。

...a house, with a high wall all around it...
四周圍著高墻的房子

The store discounted all clothing.
那家商店打折出售所有的服裝。

I’m boiling after the long walk.
長途跋涉后我熱極了。

She untied the laces on one of her sneakers...
她解開了一只鞋的鞋帶。

The requirement for work permits violates the spirit of the 1950 treaty.
對工作許可證的要求違反了 1950 年條約的精神。

The true dreamers, a respectable 12 percent , requested masseuses and manicurists.
而那些真正的夢想家 -- 竟然占了12%--要求在里面派駐女按摩師和美甲師.