This is the 511th most frequent Chinese word.
加大
"加大" means "to enlarge" or "to increase."
In this sentence, '加大' means 'increase' or 'intensify', describing an enhancement in the intensity of investment efforts.
加大了投资力度,这促进了经济增长。
Increased investments have promoted economic growth.
'加大' here signifies the act of augmenting or enhancing, applied to the regularity of maintenance checks.
为了确保安全,我们需要加大对设备的检查频率。
To ensure safety, we need to increase the frequency of equipment checks.
In this instance, '加大' conveys the expansion or intensification of the action, referring to a broader implementation of a policy.