In the case of an intermediate contract depth, the work to deepen the well would likely be done on a day-rate basis, or a "time and Materials" contract.

如果是中间点合同深度，则对井眼的加深作业可能采取日费合同或“时间和材料”合同。

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S. companies to deepen their involvement in China, which is both a key market for their potential exports as well as a source for many manufactured goods on which U. S. companies and consumers depend.

中国既是美国企业重要的潜在出口市场，也是美国企业和消费者所需众多制成品的来源地。

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S. companies to deepen their involvement in China, which is both a key market for their potential exports as well as a source for many manufactured goods on which U. S. companies and consumers depend.

中国既是美国企业重要的潜在出口市场，也是美国企业和消费者所需众多制成品的来源地。

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