threshold n. 1.門檻;入口,門口。 2.【心理學】閾限。 3.界限,限度。 4.【物理學】臨界值,閾。 5.入門,開始,開端。 Seniors of the threshold of the diplomatic career are expected to take this course. 希望即將從事外交工作的四年級生選修本課程。 at the threshold of 在…的開始,就要開始的時候。 cross sb.'s threshold 走進某人家里。 cross the threshold 跨進門內(nèi)。 on the threshold 在門口。 on the threshold of 在…的開頭,就要…。
development n. 1.發(fā)展,發(fā)達;進化。 2.展開;擴充;開發(fā)。 3.發(fā)達物,新事物,發(fā)展階段。 4.【生物學】發(fā)育(史);【軍,數(shù)】展開;【攝影】顯影,顯像;【音樂】展開(部);研制,研制成果。 development area 〔英國〕新開發(fā)地區(qū)。 development of heat 放熱,生熱。
A discussion rural economy sustainable development threshold in huai ' an city 論淮安市農(nóng)業(yè)經(jīng)濟可持續(xù)發(fā)展的臨界值
The development threshold temperature and effective accumulative temperature for whole generation were 6 . 68 and 742 . 97 day - degrees , respectively 花翅搖蚊的世代發(fā)育起點溫度和有效積溫分別為6 . 68和742 . 97d ? 。
The initial development threshold temperature and effective accumulated temperature of whole generation were determined as 8 . 40 and 456 . 09 , respectively 全世代的發(fā)育起點溫度和有效積溫分別為8 . 40和456 . 09日度。
The concept of development threshold is defined from the angle of ecology , that is a new model evaluated water sustainable development , and its characteristics are analyzed 從生態(tài)學的范疇界定了評價水資源可持續(xù)開發(fā)的新概念?開發(fā)度,建立了地表水體和地下水體開發(fā)度計算模型。
At the same time , at the agent of its development threshold , water resources has been allocated , and carrying capacity is evaluated . at last , by the analysis of the results of allocation and carrying capacity , the structures of use water and industry must be adjusted , then , the sustainable development of dongjiang basin will be realized 研究結(jié)果表明,目前東江流域的水資源開發(fā)是可持續(xù)的,并對其在開發(fā)度范圍內(nèi)進行了水資源合理配置和承載能力分析,提出只有調(diào)整用水結(jié)構(gòu)和產(chǎn)業(yè)結(jié)構(gòu),才能實現(xiàn)流域的可持續(xù)發(fā)展。