TreeModel is in charge of certain tasks, such as connecting to the data source, lazy loading, and querying from the Tree widget about items and the hierarchy of items.

TreeModel负责某些任务，比如连接到数据源、延迟加载、以及从Tree小部件查询条目和条目层次结构。

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After the collision, Wilde took charge of the even-numbered lifeboats, and oversaw their loading and lowering into the water. He was among those who died in the tragedy.

在撞击发生之后，王尔德负责偶数编号的救生艇，他对乘客登上救生艇、放救生艇入水的过程进行了监督。他是那些在这场悲剧中不幸遇难的人之一。

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The frequency spectral analyses show that the second ignition method could weaken and restrain the high frequency vibration, improve the characteristic of vibration in high loading density charge.

压力波的频谱分析表明在高装填密度装药中，采用第二种点传火方案能削弱和抑制压力波的高频振荡成分，改善其振动特性。

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