However, the low bioavailability of hydrocarbons leads to their slow biodegradation.
但是石油生物可利用性低是限制其生物降解的主要因素。
The common causes of zinc deficiency are low dietary intakes and low bioavailability.
缺锌常由于较低的膳食摄入量和利用率。
Most oral dosage forms of FP had low bioavailability because FP could hardly dissolve.
FP的口服制剂中，大多存在溶出难和生物利用度低的问题。
Traditional delivery methods-systemic administration can lead to side effects and low bioavailability.
传统给药方式—全身给药，副作用大，生物利用度低。
Low bioavailability is most common with oral dosage forms of poorly water-soluble, slowly absorbed drugs.
低生物利用度最常见于水溶性差、吸收慢的药物的口服剂型。
This drug has low bioavailability, adverse reaction of gastrointestinal tract by oral administration, and is administered frequency.
炔雌醇口服生物利用度低，有胃肠道副作用，日给药次数多。
Documents show that the low biological activity of quercetin is due to its low bioavailability. Poor solubility and first-pass effect are the main factors that affect its bioavailability.
文献表明槲皮素生物活性低是由于其低的生物利用度，溶解性差与首过效应是影响其生物利用度的主要因素。
Organic selenium has the advantages of high bioavailability, low toxicity.
有机态硒具有生物利用度高、毒性低等优点。
But the oral dosage forms of Breviscapine are poorly absorbed in body, and they have low absolute bioavailability.
但灯盏花素口服剂型吸收较差，绝对生物利用度低，而注射给药给长期治疗的病人带来许多不便和痛苦。
However, for the sake of its low oral absorption and bioavailability, now in clinic Puerarin is administrated only by vein injection, which is inconvenient for patients and limits its clinical use.
由于其口服难吸收、生物利用度低的原因，临床只用于静脉给药。这不仅给患者带来用药的不便，而且也限制了葛根素的临床应用。
In such cases, bioavailability tends to be highly variable as well as low.
在这种情况下，生物利用度往往变化更大，也很低。
Objective: Lonidamine is limited in their therapeutic value by properties such as low water solubility, poor bioavailability.
目的：氯尼达明水溶性差，本文旨在研制其微粉化片剂处方并考察其稳定性。
Since the enriched metals were mainly bound to the relatively stable geochemical fractions, the bioavailability was generally low.
富集层面中痕量金属大部分结合在相对稳定的地球化学相上，生物可给性较低。
Since the enriched metals were mainly bound to the relatively stable geochemical fractions, the bioavailability was generally low.
富集层面中痕量金属大部分结合在相对稳定的地球化学相上，生物可给性较低。
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