Such problems were lowest in children delivered by caesarean section and highest in those delivered using instruments like forceps and vacuum, the researchers said.

研究人员说，由剖腹产出生的儿童出现这些问题的比例最小，通过手术钳及真空抽吸而出生的患这些问题的比例则最多。

youdao

Mainly it discusses two problems: software instruments of viscosity and flash point using neural networks and operation optimization on the atmospheric and vacuum towers using NLJ method.

主要探讨了两个方面的问题：采用神经网络建立各个侧线粘度和闪点的软测量仪表以及采用NLJ方法实现常减压塔的操作优化。

youdao

Widely used in the welding of aluminum, copper, iron, stainless steel, and some vacuum wares, electronic components and the inner structures of the thermal measuring instruments.

广泛适用于铝、铜、钨、镍、铁、不锈钢等多种金属片、丝、棒的焊接以及电池，电真空器件，电子元件，小五金和热工测量仪表内部结构的装配和焊接。

youdao

Such an overly simplistic conclusion implies that Treasuries exist in a vacuum, without taking into consideration fund flows between asset classes and between instruments of different credit quality.

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The instruments will measure the diffuse mixture of charged particles and fields which exist in the near-vacuum between the Earth and the Sun.

BBC: NEWS | Science/Nature | Chinese-European mission set for launch