Causes and Countermeasures for the Decrease of Milk Fat Percentage in Dairy Cows;
奶牛乳脂率下降的原因与对策
Prevention of direct current insulation decrease in electric system;
电力系统直流绝缘下降及防范探讨
On the Reasons of Students' Physical Stamina Decrease and its Countermeasures
学生耐力素质下降原因及对策研究
Global convergence or a class of conjugate descent algorithm;
一族共扼下降算法的全局收敛性
F is adescent of f.
对于一类N维单位体到自身的连续映射f,我们利用了f的下降F以及Sharkovskii定理给出了这种映射有素周期点的一个必要条件———设F是f的下降,如果f有素周期点,则存在x∈Ω(f),使x是准周期点,但不是周期点。
To descend by means of a parachute.
跳伞，伞降用降落伞下降
drawdown [groundwater]
水位下降〔地下水〕
descent:The act or an instance of descending.
"下降,降落:下降的动作或实例."
A downward movement.
下降，落下向下的运动
The temperature is going down; The barometer is falling; Real estate prices are coming down.
温度正在下降；气压下降了；房地产价格正在下降。
compared with the figure in 1992, it has been decreased by 55%, among which the number in the urban areas has been decreased by 74% and in the rural areas the number has been decreased by 51%.
比1992年下降55%，其中城市下降74%，农村下降51%；
A falling inflection of the voice, as at the end of a sentence.
声音降落，降句调发音时下降的音调
lagging edge
【电】(脉冲的)下降边
The birth rate have fall to twelve per hundred.
出生率下降到12％。
The earthworm population had declined by 70%.
蚯蚓数量下降70％。
A downward tendency, as in the price of a stock.
下降趋势如股票价格等的下降趋势
A descent by stages or steps.
递减，下降一种逐级或逐步的递减，下降
The Modified Steepest Descent Method──Best Point in Steepest Descent method
改进的最速下降法─最好点最速下降法
a lowering of temperature below the freezing point
下降到冰点以下的温度
The temperature fell to 26°below zero.
温度下降到零下26度。
a vertiginous drop, descent, etc
令人眩晕的下落、 下降等.
Of or relating to psychological depression.
（生理功能）衰弱的，下降的生理下降的，与生理下降有关的
But when the temperature drops, so does the humidity level.
但是气温下降时，湿度也随之降低。