principal product

基本解释

The principal product of Pittsburgh is steel.
匹兹堡的主要产品是钢材。
Adobe principal product manager for developer relations, Mike Chambers, said in a statement Apple is being unreasonable.
Adobe负责开发者关系的首席产品经理迈克·钱伯斯（Mike Chambers）指责苹果的政策“不可理喻”，他表示苹果的字典里没有“开放”一词，而是想把开发者牢牢拴在苹果自己的平台上，从而限制开发者使用其他平台。
The produced hydrogen radical from the whole processes gives another principal product, H2. The CHxO reaction path is more favored than the CHx alternative.
整个反应过程中所产生的H自由基之间和化合反应产生了反应的另一主产物H_2。

The principal product is polyvinyl chloride resin, which is supplied to downstream subsidiaries to manufacture and market end-user industrial and consumer products.
FORBES: #1,487 Westlake Chemical
The Dangers of Myopic Parochialism: A principal by-product of a decision to cancel space-based and sea-based elements while reactivating the E2I and GSTS would, of course, be to put almost the entire SDI program into the Army's hands -- much of it centered in Huntsville.
CENTERFORSECURITYPOLICY: Center For Security Policy
So foreign is this product to their corporate culture that the banks never installed the systems needed to collect the monthly payments of principal and interest that make this product unique.
FORBES: Magazine Article