Valve Disadvantages: the valve is prone to leakage around the stem, especially in-board leakage when a vacuum is pulled on the valve outlet.

阀门的缺点：当阀门排气口处是真空时，阀门在阀杆附近容易泄漏，特别是内部泄漏。

youdao

Those words are echoed in the National Science Board report - Preparing the Next Generation of STEM Innovators: Identifying and Developing Our Nation's Human Capital.

国家科技委员会的报告-《储备下一代STEM开拓者：发现和培养人才》中完整引述了这段话。

youdao

The first step in raising the profile of STEM professionals is getting the mainstream media on board.

FORBES: Why America Must Be A Beacon For Tech's Best And Brightest

It is no excuse either for the HP board to have gambled its future on growth by acquisition to stem the way its old-line core businesses, like storage and enterprise software, were collapsing.

FORBES: HP-Autonomy Debacle Another Stain On Wall Street

There seems to be no doubt the stem cell conference in March was cancelled at the last minute due to Seifert and others on the board as well.

FORBES: Vatican Academy Struggles With Internal Dissent Over Outreach to Biomedical Researchers