The composition of the food and the surface on which it falls matter as much if not more than the length of time it remains on the floor, the study found.

这项研究发现，在细菌污染方面，食品与地面质材的组合与食品接触地面的时长几乎同等重要。

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Influence of different tuyere diameter, length and coke particle sizes composition on radial length, width, height and volume in BF tuyere rotary region is studied by calculation.

通过计算，研究了不同风口直径、风口长度和高炉风口焦炭不同粒度组成对高炉风口回旋区的径向长度、宽度、高度和体积的影响。

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Analyzed characteristics were the PEO side chain length, the degree of backbone polymerization, the composition of functional groups such as carboxylic and sulfonic groups, and the purity of polymers.

主要剖析的特性为：聚氧化乙烯(PEO)支链的长度，主链聚合的水平，各功用组如羧基组和磺酸基组的成分以及聚合物的纯真度。

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Details - including the size, composition and the length of the council's mandate - were being hammered out at a meeting on Monday, he added.

BBC: Guinea-Bissau junta agrees pact with some parties

These evaluations include everything from the composition of the board to the length and quality of its meetings.

FORBES: A New Era In Corporate Governance