As aquifers are depleted and irrigation Wells go dry, farmers either revert to low-yield dryland farming or, in the more arid regions, abandon farming altogether.
随着蓄水层的枯竭和灌溉井的干涸，农民不得不改种低产的旱地作物，在更为干旱的地区，他们干脆放弃耕作。
Under the instruction of metabolic control theory, the screening of leucine auxotroph was determined as the method of selecting the mutant strain of low-yield fusel oil.
以代谢控制理论为指导，确定以选育亮氨酸营养缺陷型菌株作为初筛方法，选育低产杂醇油啤酒酵母突变菌株。
Foreign Banks and hedge funds borrowed yen at low interest rates which they then sold, swapping the yen into higher-yielding currencies and profiting from the yield difference.
国外银行和对冲基金利用低利率贷来日元然后兜售，将日元兑换成高收益货币，从中获利。
This paper puts forward a new equipment combine to measure a production profile of Low-yield and three phases flow well.
针对低产量三相流动生产井，提出了新的产出剖面测井仪器组合。
A common stock of a nationally known company whose value and dividends are reliable; typically have high price and low yield.
国内知名企业发行的其价值和股息均有保证的普通股；高价低收益。
There are some problems to await to settle in the traditional produce craftwork of vanillin for instance high cost, low yield, the complex craftwork and serious waste pollution etc.
传统的香兰素生产工艺普遍存在着成本高、收率低、工艺复杂及三废污染严重等有待解决的问题。
The variety Norland had poor resistance and low yield, but it had high dry mater and starch content.
诺兰的抗性差、产量低，但干物质、淀粉含量高。
Seeding propagation and extensive management were important factors that resulted in low yield and poor quality.
实生繁殖、经营管理粗放是造成板栗产量低、品质差的重要因素。
Dimethylethanolamine (DMEA) is an important chemical product, but there exists low yield disadvantage in its current synthesis technique because of many side reactions.
二甲基乙醇胺(DMEA)是一种重要的化工产品，其现有的合成工艺由于存在副反应导致收率较低。
It overcomes the drawback of DMC low yield in traditional technology, raises the output of the product DMC and decreases the consumption of energy.
克服了传统工艺碳酸二甲酯收率低的弊端，提高了产品的产量，降低了能源消耗。
But many defects exist in the pear industry such as unreasonable varieties structure, low yield per unit area, the shortage of high quality fruits, poor benefit and so on.
但是，从整个梨产业结构来说还存在不少问题，如品种结构不合理，单位面积产量低，优质果少，经济效益差等。
An experimental and theoretical study of the earthquake mitigation effect of hysteretic dampers using ultra low yield point steel was presented in this paper.
本文通过试验研究和理论分析探讨极低屈服点软钢阻尼器的减震效果。
But with its fragile ecologic system and low fertility of soil the salinization of soil is serious, which causes the low yield of grain.
但生态系统脆弱，土壤盐渍化严重，肥力低下，粮食产量低。
Calm steel disadvantage is concentrated shrinkage, low yield, high price.
镇静钢的缺点是有集中缩孔，成材率低，价格较高。
Technique and countermeasures were proposed for transformation of low yield timber forest after analysis on its causes through investigation on current resources of low yield and scattered forest.
在调查研究全省现有低产林及疏林资源基础上，着重分析了低产用材林形成的原因。并提出了低产用材林改造的技术路线与相应措施。
A study was done on the problems such as the relatively low yield, low purity and dark color of the corn-gluten foaming powder produced by means of hydrolyzing corn gluten with alkali.
在用碱水解玉米麸质粉生产玉米蛋白发泡粉的基础上，就玉米蛋白发泡粉得率低，纯度低，色泽深等问题进行了研究。
In recent years apple production in China has met with the problems of poor quality, low yield, and unfavorable marketing conditions both at home and abroad.
我国苹果生产近几年出现了卖果难、品质差、单产低、出口量小等一系列问题。
The macrocyclic triamine compounds are very important compounds. But it is extremely difficult to synthesize these compounds because of low yield and numerous steps.
大环三胺类化合物是一类非常重要的化合物，但其合成比较困难，存在合成步骤多、产率低等问题。
Low yield product analysis, yield enhancement.
对成品率低的产品进行分析和提高。
In another direction, the radical cyclization of thioimide with acylsilane produced simple cyclization product in low yield without expected enol silyl ether compound.
对于硫醯亚胺与矽基酮的自由基反应，则是得到低产率的简单环化产物，而不是预期的烯醇矽醚化合物。
With the application of technology of earthquake resistant energy dissipation(ERED) for skyscrapers, low yield point(LYP)steel used to the fabrication of energy dissipation damper is in focus.
通过合理的成分设计及轧制工艺，宝钢研制出可用于制作耗能阻尼器的系列低屈服强度钢，并成功实现了批量生产和工程应用。
Mechanical properties and fracture mechanism of high strength steel sheet with low yield ratio under impact loading have been studied through instrumented impact and quasi-static tensile tests.
通过室温下的仪器化冲击试验和静态拉伸试验，研究一种低屈服比高强度钢板在冲击载荷下的力学性能和断裂机理。
The negative yield on inflation-linked bonds is just a corollary of the very low yields on conventional debt.
通胀保值债券的负收益不过是常规债务低收益的必然结果。
Bonds offered too low a yield to produce exciting long-term returns.
债券的收益率太低，而不能提供令人兴奋的长期收益。
At present, there is increasing demand for colored rice because it has good rice taste and medicinal value, but low yield is the main influence factors of the large-scale popularization.
有色稻米具有良好的食味、药用价值，目前人们对有色稻米需求不断增加，但产量低是影响其在生产上大面积推广的一个主要因素。
At present, there is increasing demand for colored rice because it has good rice taste and medicinal value, but low yield is the main influence factors of the large-scale popularization.
有色稻米具有良好的食味、药用价值，目前人们对有色稻米需求不断增加，但产量低是影响其在生产上大面积推广的一个主要因素。
应用推荐