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Porphyridium cruentum were treated with some antibiotics which were used as genetic selected marks in genetic engineering. The results showed that the algae cells could resist high concentration of Penicillin,Streptomycin,Gentamicin and Kanamycin, without any influence at the dose below 100 u/mL of which can kill bacterium adhere to the algae cells . These antibiotics can be used to repress bacterium in purifying algae strain.Porphyridium cruentum is high sensitive to Erythromycin,Terramycin and Ofloxacin....

研究了基因工程中常用抗生素标记对紫球藻的生物学效应，结果表明紫球藻对青霉素、链霉素、庆大霉素以及卡那霉素较不敏感，剂量在100u/mL以下对其生长无显著影响，但能抑制或杀灭伴生的杂菌，因此这些抗生素可用于藻种纯化过程中抑菌；紫球藻对红霉素、氧氟沙星和土霉素非常敏感，低质量浓度就能杀死藻细胞，可用作基因工程或遗传育种的抗药性选择标记；对四环素和氯霉素较为敏感，明显抑制细胞生长，并呈浓度梯度效应。

When communicating with this office,either by tetter,you must always refer to your name and case number exactly as they appear below.

跟签证办公室沟通或者是通话时，你必须准确的提供你的姓名和编号，如下所示。

A replacement cost above the market price doesn't do the investor any good . When the bottom falls out of the real estate market , as it does from time to time , plenty of houses sell for below the building cost , forcing builders to take a loss , and crimping new development , until supply and demand come back into balance .

可房产重置价格高于市场价格，投资商就赚不到钱；而当重置价格跌至底部，以至与房地产市场极不相称，房产的卖价就会低于开发价，从而导致开发商亏损、新的开发项目停滞，直到供求关系达到平衡这种局面才会扭转。

The foremost emphasis of the Club is focused on the exceptionally well appointed "Ahwahnee Spa" located on the first and second floors of the spa which is based around Balneotherapy treatments as the spa club draws its Thermal Spring Water from 3000m below the Club House.

俱乐部最隆重推出的是位于俱乐部二层和三层的Ahwahnee Spa，其服务项目应有尽有。值得一提的特色护理项目是浴疗法，从地下3000米深处汲取的温泉水经过净化注入池中。

Both bulk and powder compact samples were thermally treated at 300℃ which is far below the glass transition temperature (419℃) as determined from the DTA thermogram.

块材和粉末压实样品均在300℃进行了热处理，该温度远低于玻璃转变温度419℃。

Below we take to the Trinidad and Tobago Soca known as a King song.

下面给大家放一首被誉为特立尼达和多巴哥Soca国王的歌。

However, if we think of the waxing and waning of tonus as being either above or below some arbitrary level, we can simplify the situation considerably.

然而，如果我们把肌肉紧张度的起伏想成低於或高於某个任意决定的水平，就能把情况简化许多。

To continue momentum oil needs to make fresh highs as failing to do so will make the chart look a touch "toppy" and may force testing of support further below in the $120.00 region.

为持续趋势，石油需要创新高；如果不成功，整个图像会看上去像一个小顶，从而测试$120.00价位层的支撑。

Since 1990s, an average of about 540 thousand person-times per year of transient population have come to river valley region, a torrid zone with sea level below 800 m, of Yuanjiang basin for development. The annual parasite incidence, slide positivity rate and parasite rate of transient population were 50 times, 2.6 times and 2.26 times as that of local residents respectively.

元江流域九十年代以来平均每年大约有54万人次流动人口到海拔800米以下的河谷地区进行热区开发，流动人口的年带虫发病率、血片阳性率、原虫率分别是当地居民的50倍、2.6倍、2.26倍，该地区已成为向两岸山区及省内外输出疟疾的疫源地。

Since 1990s, an average of about 540 thousand person times per year of transient population have come to river valley region, a torrid zone with sea level below 800 m, of Yuanjiang basin for development The annual parasite incidence, slide positivity rate and parasite rate of transient population were 50 times, 2 6 times and 2 26 times as that of local residents respectively Therefore, the river valley region has become a focus in transmitting malaria to both side of mountainous areas a...

元江流域九十年代以来平均每年大约有 54万人次流动人口到海拔 80 0米以下的河谷地区进行热区开发，流动人口的年带虫发病率、血片阳性率、原虫率分别是当地居民的 50倍、2 。6倍、2 。2 6倍，该地区已成为向两岸山区及省内外输出疟疾的疫源地。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。