cast grain 中文意思是什麼
cast grain
解釋
澆鑄成型藥柱-
Metallograph of cast aluminium alloys. cast aluminium - copper alloys grain size
鑄造鋁合金金相.鑄造鋁銅合金晶粒度 -
The word "grain" is an old ordnance term for explosive powder or even for blocks of cast powders or crystals.
藥柱這個詞是用於炸藥或者甚至用於澆注火藥塊或晶體塊的一個古老的軍械術語。 -
The results indicate that the fracture toughness is influenced markedly by the different base structure of vermicular east iron and by the form of graphite ; unlike steel, the fracture toughness of vermicular cast iron increases with the yielding strength, while drops drastically with the increase of ratio of graphite grain length to thickness
試驗結果表明，蠕墨鑄鐵的斷裂韌度受不同基體組織的影響比較明顯；受不同石墨形態的影響顯著，與結構鋼不同，蠕墨鑄鐵的斷裂韌度隨材料的屈服強度增大而增大，隨石墨顆粒的長厚比增加會急劇下降。 -
Testing method of cast shot and grit grain size
鑄造金屬丸及砂粒度的測試方法 -
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。
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