- normal: adj. 1.正常的，平常的，普通的 ...
- concentration: n. 1.集中。 2.【化學】提濃， ...
- normal background concentration: 正常背景濃度
- Quit - bleed maintains a normal concentration of prothrombin and other clotting factors in the blood plasma by promoting their biosynthesis in the liver
Quit - bleed能促進肝臟合成凝血因子prothrombin及其他凝血因子，以維持他們在血漿內的正常濃度。
- The liver capacity was explained in the previous chapter to store carbohydrates as glycogen and to release glucose to maintain the normal concentration of glucose in the blood
- Although acid is often thought to be the stomach ' s main line of defense against invading bugs , the researchers found that e . coli , salmonella and other bacteria could survive for hours in it , whereas high normal concentrations of nitrite plus acid killed the bacteria in less than an hour
- ( 2 ) in high ca2 + krebs - henseleit ( k - h ) solution ( twice of normal concentration ) , duration of phasic contraction induced by fac was prolonged , which was longer than 60min , and the contractile amplitude was enhanced to 58 . 71 ? . 71 % ( p < 0 . 01 ) . after rings were incubated with nifedipine for 15min in order to block the l - type ca2 + channel , the iron induced contractile amplitude was inhibited
主動脈環用硝苯毗咤（ nifedpine ， nif ）孵育15min以阻斷卜型鈣通道后，再給予鐵刺檄，與未加nif的同濃度細胞外鈣離于組相比，鐵所致的收縮幅度均明顯降低（均p 0刀1 ） ，且高鈣液中鐵引起的相位性收縮幅度明顯高于正常鈣組。
- In chapter 2 , an economic concept - location quotients ( lq ) is introduced into the mathematical part of this article , in order to isolate what a city does well , and to find which of its industries export to the rest of the nation . author manipulates last five years " lq from data on farming , forestry , animal husbandry , coal , rude oil , tourism , export and import , population and etc , argues that we could know weather there is a larger than normal concentration of activity in the region , and weather there is a trend of regular develop trace of this activity by running a time series simple autoregression , which provides a feasible analysis tool for people to judge and choose an advantageous industry within this region