例句與造句

1. study on the nitrogen and protein content in spring wheat under low seeding density cultivation
   稀植栽培對春小麥氮素和蛋白質(zhì)含量變化的研究
2. the results are as follows : grain number per panicle, seed density, secondary branch number, secondary branch grain number, secondary branch grain rate are significantly positively correlated with rice yield, & the yield is affected by all of them
   產(chǎn)量與每穗粒數(shù)、著粒密度、二次枝梗數(shù)、二次枝梗粒數(shù)、二次枝梗粒率呈極顯著的正相關(guān)關(guān)系，這些性狀對產(chǎn)量都有積極意義，產(chǎn)量是其綜合作用的表現(xiàn)。
3. the assay system of the biological activity of lymphotoxin was established using l929 cell as the sensitive target, lt international standard as the positive control and crystal violet staining method to detect viable cell after treated with lt . the best relationship between dosage and effect could be got if the cell seeding density in cell plate was 1.6 0.1 104 the dosage of amd was lug / ml, and the starting concentration of dilution in the plate of lt standard was 10 iu / ml with two fold dilution . the credibility of the established system was detected with rhtnfp developed by r & d
   為確定經(jīng)上述步驟純化后得到的目的蛋自lt27的生物活性，本研究以l929細胞為靶細胞、淋巴毒素國際標準品為參照，采用結(jié)晶紫染色法檢測經(jīng)淋巴毒素處理后存活的細胞，對淋巴毒素生物活性測定的細胞接種濃度、淋巴毒素標準品板上稀釋的起始濃度和梯度稀釋的倍數(shù)、放線菌素d的使用劑量等進行條件實驗后，建立了人淋巴毒素生物活性測定方法。
4. It's difficult to find seed density in a sentence. 用seed density造句挺難的