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Ethanol is more effective at a concentration of 50-70 per cent; below 20 per cent, its bactericidal action is negligible.

乙醇的浓度为 50%至 70%时比较有效，浓度低于 20%时，杀菌能力基本上就不存在了。

Nine super sweet corn inbred lines with abroad germplasm T1, T2, T3, M1, M2, M3, R1, R2, R3 were selected as tested lines, and original inbred lines B, C, D, 6, D2 as testing ones in this examination. 45 crosses were made by means of incomplete diallel method, and the genetic parameters of the groups and the combing ability of 10 traits, growth period, plant height, ear height, ear length, ear diameter, core diameter, baldhead length, rows per ear, kernels per row, single ear weight were tested and analyzed by means of NCⅡ design.

选用具有国外血缘的T1、T2、T3、M1、M2、M3、R1、R2和R3共9个超甜玉米自交系做被测系，以原有5个自交系B、C、D、6和D2做测验系，采用不完全双列杂交法组配出F1杂交组合45个，对生育期、株高、穗位高、穗长、穗粗、芯粗、秃尖长、穗行数、行粒数、单穗重10个性状按NCⅡ设计的原理和方法进行配合力测定与分析，并估算群体遗传参数。

To reduce the number of accidents involving mopeds and pedestrians, the town council of Balmer Island should limit the number of mopeds rented by each of the island's six moped and bicycle rental companies from 50 per day to 30 per day during the summer season.

为了减少涉及到机动自行车和行人的交通事故，Balmer岛的镇政委员会应该限制由岛上6个机动自行车和人力自行车租赁公司中每个公司租出的机动自行车的数量，在夏季将每天50辆减至每天30辆。

To reduce the number of accidents involving mopeds and pedestrians, the town council of Balmer Island should limit the number of mopeds rented by each of t he island's six moped and bicycle rental companies from 50 per day to 30 per d ay during the summer season.

为减少由助力车和行人引发的事故，Balmer Island市委应把本岛六个助力车和自行车出租公司的助力车出租数量在夏季从每天50辆限制到每天30辆。

oil price, before the war, was about 15 $ per barrell… but with the gulf war it increased to 42$ per barrel, generating an extra profit estimated to be at least 60 billions $.

原油价格在战争前每桶大约 15 块美金，波湾战争爆发后，原油每桶的价格飙涨到 42 块美金，那额外的利润估计至少六百亿美金。

There had to be water available and he expected the price to be about 15 Ethiopian birr (US$1.10) per hectare per year less than a quarter of the cost of land in Egypt and a tenth of the price of land in Asia.

因此，他所寻找的土地应该有充足的水资源，并且价格在每年每公顷15埃塞俄比亚比尔左右（$1.10）。这一价格还不到埃及土地价格的四分之一，仅为亚洲土地价格的十分之一。

The midlands were also very rainy with 39 per cent more rain than normal recorded in Birr and 31 per cent more than normal in Mullingar.

中部地区也是雨量充足，Birr地区比正常水平高出39％，Mullingar地区高出31％。

Let's first see how 16-color (4 bits per pixel) and 256-color (8 bits per pixel) model work.

让我们先看一下16色（4位每象素）和256色（8位每像素）颜色模式是如何工作的。

And this is expected to reach 10 or 20 bits per second per Hertz in years to come.

这是预计将达到10或20比特每秒每赫兹在今后几年里。

It is seamless network survey data show that the second quarter of this year, South Korea's iron ore price of 110 dollars per ton, up 90%; bituminous coal price per ton up to 200 U.S. dollars, up 55% year on year.

据无缝管网调查数据显示，今年第二季度韩国的铁矿石价格平均每吨110美元，同比增长了90%；烟煤的价格平均每吨高达200美元，同比上涨55%。

Pradeep Indulkar, a senior official at the Maharashtra state Home Ministry say 101 human were killed and 287 injured.

马哈拉施特拉邦内政部高级官员Pradeep Indulkar称，有101人在冲突中丧生，287人受伤。

Mark Frei, a senior vice president of West, says 80% of West's homeagents have some college education, compared with 30% of those whowork in office-based call centers.

Frei说，该公司80%在家办公的人员都拥有本科学位，而在公司电话中心工作的人中只有30%拥有本科学位。