“non-toxic propellants”的概念、定义、翻译、参考文献-科学参考

单词	non-toxic propellants
释义	non-toxic propellants Encyclopedia 工学液体推进剂释 non-toxic propellants绿色推进剂在保证能量特性的前提下，具有较低的毒性、能够有效降低推进剂安全防护成本和操作复杂性，减少对陆地、大气和海洋污染的液体推进剂。又称无毒推进剂。
随便看	nonnegative definite nonnegative definite kernel nonnegative definite matrix nonnegative definiteness nonnegative definite quadratic estimate non-negative definite quadratic estimator nonnegative divisor nonnegative element nonnegative function nonnegative integer nonnegative integral kernel nonnegative manifold nonnegative matrix non-negative matrix factorization nonnegative measure nonnegative number nonnegative operator nonnegative orthant nonnegative partial sum nonnegative quadratic form nonnegative semi-definite matrix nonnegative solution nonnegative splitting nonnegativity nonnegativity condition

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