This user has chosen bold formatting for a main heading and bold plus italics for a sub-heading.

该用户为主标题选择了粗体，为子标题选择了粗体加斜体。

youdao

Regression analysis showed a significant correlation between heading date and PS, indicating that PS was the main factor affecting heading date of japonica cultivar in Southwest China.

回归分析发现，抽穗期长短与品种的感光性呈显著相关，感光性是影响西南地区粳稻品种抽穗期长短的主要因素。

youdao

Under each main heading are 6 to 10 subtopics, ranging from Asset Allocation to Vanguard funds to Social Security to annuities.

FORBES: Wiki's In-depth Vanguard Data

"Estimates show that during the busiest hour in the morning peak period, the number of passengers on the Great Eastern main line heading to Liverpool Street is set to increase by 49% by 2031, from 16, 500 to 24, 600, " a statement said.

BBC: Hopes for new stations but campaign wants faster trains

Another hub airport is Los Angeles' LAX, which is the main funnel for people heading to Australia, the South Pacific, and Asia.

CNN: Lower airfares -- how to get them