The cavitation on culvert valve of high lift lock is a knotty, wide - spread problem to be solved anxiously.
高水头船闸输水阀门空化是一项普遍存在、急待解决的课题。
The stakes lock up a company's capital and it is hard to claim they spread risk.
持股关系束缚了资本的流动，却没有有效分散风险。
The stakes lock up a company's capital and it is hard to claim they spread risk.
持股关系束缚了资本的流动，却没有有效分散风险。
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