perfect grading 中文意思是什麼
perfect grading
解釋
理想粒度-
4. in order to further improve and raise storage, energy and combustion properties of boron - based fuel - rich solid propellant, while the present slurries of boron - based fuel - rich solid propellant can be cast and cured to form defect - free propellant grain, ap grading and metal fuels changing including variety and addition amount have been adjusted and investigated. the result shows that, after the adjustment, all the slurries can be cast to obtain structural perfect propellant grain which may be used to test various propellant properties
4 、為了使現有含硼推進劑的燃燒等性能進一步提高和改善，同時為了能使現有含硼推進劑藥漿澆鑄后得到結構完整性和均勻性更好的藥柱，在2 、 3研究的基礎上，對ap的級配、低燃點金屬燃燒劑的品種和加入量等進行了較深入的研究，結果表明：這些組分進行調節后的各藥漿的流平性變化均能滿足澆鑄要求，並製成能進行推進劑其它性能測試的小方坯。 -
The government should exert its functions in taxes, credit legislation, credit law enforcement and credit management education. after the credit information report agencies have already constructed, they will face three sturdy important responsibilities which are to construct personal credit consulting data - base, to perfect personal credit - grading mechanism and the data - base ' s net - work. the collabration with the foreign credit management companies is a necessary choice to accept the challenges coming from joining in wto
第四章是對策：在初始階段，央行應成為最主要的推動力量，相關政府部門應在立法、執法、制定優惠政策及發展信用管理教育等方面有所作為；而個人信用中介機構在建立之後面臨建立個人徵信數據庫、完善個人信用評估機制與徵信數據庫的網路化三大重要任務；加強與跨國信用管理公司的有效合作是迎對入世挑戰的必然選擇。
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