Experiment results indicates that the penetration rate is greatly influenced by bamboo chip thickness and directly proportional to the contacting area.

试验结果表明渗透速度受竹片厚度影响最大，并与接触面积成正比。

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This mothod is used to study the penetration depth of the retanning agent in different area and different retanning time for goatskin with various types of acrylic resin retanning agent(ART-II, DM).

研究了羊皮使用不同品种的丙烯酸树脂复鞣剂（ART- II，DM）复鞣后，复鞣剂在不同部位随复鞣时间变化的渗透情况。

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And make the east side of the natural landscape can be a good penetration into the laboratory area.

并且使东侧自然景观能便好的渗透进入实验室区。

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This is further helped by their terrain, which at first sight appears to be a tangled mass of mountains and hills running irregularly in all directions, but is actually hemmed in by well defined ranges on the outer periphery that make penetration of the area difficult.

BBC: Profile: South Waziristan

One of them is penetration of the enterprise market with solid state drives, an area hotly contested now by big storage and computing players like EMC, Dell and IBM.

FORBES: SanDisk Drives Higher As Mehrotra Prepares To Take Charge