reduction n. 1.縮小,減少;降級,降位;(刑罰等的)輕減;減速;減價,折扣。 2.(城市、國家等的)陷落,投降,被征服、變成 (to; into)。 3.破落,沒落;【物理學】衰減。 4.類別;碎礦;提煉。 5.【數學】簡化,約簡,縮減;化歸。 6.(測量結果的)整理,(代號等的)譯解;【無線電】訂正。 7.【化學】還原法,改格法;【攝影】減薄。 a 10% reduction 九折。 great reductions in prices 大減價。 the reduction of armaments 裁(減)軍(備)。 ascending [descending] reduction 由小[大]單位改成大[小]單位的換算法。 reduction to absurdity=reductio ad absurdum.
Preparation and performance of cu2 - ti - pillared montmorillonite modified by so2 - 4 for selective reduction of no by propene under lean - burn condition 改性鈦交聯(lián)蒙脫催化劑的制備與性能
Urine ? separate determination of organic , inorganic and total mercury ? selective reduction cold atomic absorption spectrometric method 甲基)汞、無機汞和總汞的分別測定方法選擇性還原-冷原子吸收光譜法
Japanese patients physical decline , be selective reduction , weight loss and weak , can be associated with fever , anemia obvious , or even awareness of fuzzy , sepsis occurred but rarely see 患者體力日衰,胃納減少,消瘦無力,也可伴發(fā)熱,明顯貧血,甚至意識模糊,但發(fā)生敗血癥者很少見。
Methods 3 , 3 - bis ( dibenzyloxyphosphoiyl ) propionic acid ( 5 ) and ( 6 ) were synthesized from tetraethyl methylene bisphosphonate via hydrolysis , chlorination of the acid , esterification , condensation , then 3 , 3 - bis ( dibenzyloxyphosphoryl ) propanol ( 6 ) was obtained via selective reduction of ( 5 ) 方法以亞甲基偕二膦酸四乙酯( 1 ) ?原料經水解、氯膦酰化、酯化、縮合得3 , 3二(二芐氧膦?;┍? 5 ) ,隨后選擇性硼氫化還原得3 , 3二(二芐氧膦酰基)丙醇( 6 ) 。
百科解釋
Selective reduction (or multifetal pregnancy reduction or MFPR) is the practice of aborting one or more fetuses in a multifetal pregnancy, say quadruplets, to a twin or singleton pregnancy.