Given initially at 2 , 4 and 6 months of age , it protects children from bacteria that often cause ear infections and drug - resistant pneumonia 在出生后的第2 、 4和6月接种，疫苗能够保护儿童免受经常引起内耳感染和药物抵抗性肺炎的病菌的侵袭。
The diaphragm system makes the gauges extensively insentive to vibration or jarring and produces a high level of overpressure protection and actuating force 膜片系统使压力表对振动或震动有抵抗性，这样压力表就能进行过压保护和产生操动力了。
Moreover , in order to raise the watermark ' s security and keep resilience to cropping attack , we used the magic square shuffling techniques in watermark image before embed the mark 此外，为了提高水印的安全性和对剪切的抵抗性，在嵌入水印前，还先对水印进行了幻方置乱预处理。
The experiment results show that the watermark embedded is rather robust to various attacks such as adding noise , rotation , translation , scaling , insecting , down - sampling and some of their combinations 实验表明该算法鲁棒性较好,对噪声、旋转、平移、缩放、剪切、降采样及其联合攻击的抵抗性较强,并且算法复杂度较低。
The so - called transgenic insects would be resistant to infection by falciparum . through breeding , the altered insects would gradually replace the population of mosquitoes capable of becoming infected with the parasite 这种所谓的经过基因改造的昆虫对恶性疟原虫有抵抗性。通过繁殖，这些蚊子可以取代可能被寄生虫感染的蚊子。
The presence of these proteins may explain why some prostate cancers become resistant to these widely - used therapies , and offers new directions for research into future treatments that could block the development of androgens in the cancer cells 这些蛋白的存在可以解释为什么有些前列腺癌会对这一广泛适用的治疗方案产生抵抗性，并且为今后研究阻断癌细胞内产生雄激素的治疗措施提供了新的方向。
Separators of battery ( for its electric resistance and acid - proof . ) , venetian blinds ( for its good working , stability , lightness and good coating ) , sashes , doors , instruments , fittings , durable linings , wood instruments , boat decks , match boxes , general construction , tanks , thick boards , railway sleepers and subsitute for hinoki cedar 畜电池分离器(取其电气抵抗性与耐酸性) 、百叶窗(取其加工性、安定性、轻软度与涂装性良好) 、木门、内部装黄材、火柴盒。
Escherichia coli phytase appa is an alternative enzyme with performance advantages over the conventional a . niger enzyme . the appa phytase displays several favorable characteristics : an acidic ph optimum close to the physiological ph range of the stomach of pigs and chickens , higher affinity to sodium phytate , greater resistance to pepsin than the commercially available a . niger phya , and higher catalytic efficiency for phytate than that of all other known phytases 大肠杆菌来源的appa植酸酶是一种新型的植酸酶，与常规的黑曲霉植酸酶相比具有许多优点，如与猪、鸡等畜禽胃的ph环境更加适应，与底物植酸更强的亲合性以及对消化道蛋白酶更强的抵抗性。
With high concentration of sds and elevated temprature （ 43 ） ， we succeeded in eliminating plasmids from ten strains of s . aureus which were isolated from the farms of beijing suburb . according to the sensitivity test before and after plasmid remoral ， we found that 72 . 5 antibiotic resistance of s . aureus was mediated by plasmids ， and 27 . 5 encoded by chromosome . the curing test indicated that the plasmids play an important role in coding the resistance to antibiotics 从北京郊区鸡场分离到10株耐药性金黄色葡萄球菌，对这些菌株进行质粒消除，根据质粒消除前后的耐药性检测，发现耐各种药物的抗性基因大多数位于质粒上，少部分抗性基因位于染色体上，由质粒介导的耐药基因占72 . 5 % ，由染色体编码的抗性基因占27 . 5 % ，说明质粒在决定对抗生素的抵抗性中起主要作用。
