Obstruction can lead to prolonged labour, which increases the risk of caesarean section, heavy bleeding, distress in the infant and stillbirth.
阻塞可能使分娩时间延长，从而增加剖腹产、大出血、婴儿窘迫和死产的危险。
One problem with the approach in the previous section is that the conceptual information is duplicated in schemata, which can lead to skew as one or the other is updated.
上一小节介绍的方法有一个问题，就是概念信息在schemata中是重复的，因此对这些重复的概念进行更新时会出现错误。
With theory analysis, experiment research and spot test, this paper takes the lead in establishing technology system of gob-side entry retaining with large section or small one.
通过理论分析、实验研究和现场试验，本文率先在国内初步建立了由大断面、小断面沿空留巷组成的综放沿空留巷技术体系。
Made of a square section lead bar encased in a smooth plastic body.
由单个正方形截面铅棒顺遂塑料包裹身材。
Being discovered large quantity of additional reserves in deeper section of Huize lead and zinc mine, some survey needs to be carried out so as to help the mine to start its mining work in time.
随着会泽铅锌矿深部大规模储量的发现，为深部采矿服务的测量工作需及时展开。
Copper wire color (dark red or white) : continuous annealing in the work period of the line burn soft and pass cooling section after cooling can achieve lead not hot, without water.
铜线变色(暗红或发白)：连续退火在工作段把线烧软，还要经过冷却段冷却后才能达到引出线不烫、不带水。
He would stretch the H-section lead strips, or cames, to stop "creep" in the soft, ductile metal;
他伸展H型铅条，或卡梅斯，消除柔软韧性金属的脆性；
He would stretch the H-section lead strips, or cames, to stop "creep" in the soft, ductile metal;
他伸展H型铅条，或卡梅斯，消除柔软韧性金属的脆性；
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